Classic Creamy HashBrown Casserole: The Ultimate Cheesy Side Dish

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HashBrown Casserole

There are certain dishes that define comfort, warmth, and celebration. For generations of American home cooks, the definitive example is the creamy, cheesy, and utterly irresistible potato bake often known simply as the HashBrown Casserole. Whether you call it “funeral potatoes” (a nod to its indispensable presence at potlucks and gatherings), cheesy potato bake, or just the best side dish ever, this recipe is a cornerstone of holiday tables, Sunday brunch menus, and weeknight dinners when you need a little extra warmth. This classic version delivers the perfect texture: a smooth, savory, creamy interior coupled with a spectacular golden, crunchy topping. Forget complicated preparation; this recipe proves that the best comfort food is often the simplest. We’re diving deep into making the perfect HashBrown Casserole, ensuring every bite is nostalgic and satisfying.

The beauty of the traditional HashBrown Casserole lies in its simplicity. It requires minimal active prep time and relies on readily available ingredients namely, frozen shredded hash browns, creamy soup, sour cream, and, crucially, a generous amount of sharp cheddar cheese. This dish elevates humble frozen potatoes into something truly extraordinary. If you’ve been searching for a foolproof, crowd-pleasing side dish that freezes well and tastes even better the next day, your search ends here. Get ready to master the ultimate creamy potato side, perfect for your next gathering or just a cozy night in. We will guide you through maximizing flavor, achieving that beautiful crisp topping, and making this savory bake a permanent fixture in your culinary rotation.

Why You’ll Fall in Love with This Cheesy Potato Casserole

The moment this HashBrown Casserole emerges from the oven, bubbling gently with its golden-brown crust, you understand its enduring appeal. But the love affair deepens when you take that first creamy, cheesy forkful. This recipe isn’t just a side dish; it’s an experience, rooted deeply in the joy of shared meals and exceptional flavor contrast. We have perfected the ratio of creamy binder to potato, ensuring that every shred of potato is enveloped in a rich, savory sauce, preventing that common mistake of a dry casserole. It is truly the best HashBrown Casserole you will ever make.

Unbeatable Texture and Flavor Profile

The texture contrast is arguably the main reason this dish is so adored. The base of the casserole is incredibly smooth and tender. The frozen shredded hash browns melt into the creamy sauce, creating a decadent, hearty foundation. We use a combination of cream of chicken soup and sour cream, which provides an ideal level of tang and richness without being overly heavy. The sharp cheddar cheese weaves throughout the mixture, offering pockets of gooey, salty flavor. Then there is the topping the crowning glory of the HashBrown Casserole. Choosing between crunchy corn flakes or savory Ritz crackers provides a delightful textural crunch that contrasts beautifully with the soft interior. This crispy top layer seals in the moisture and adds a buttery, toasted flavor that completes the dish.

The Definition of Crowd-Pleasing Comfort Food

Whether you are hosting a large holiday gathering, preparing a potluck contribution, or simply feeding a hungry family, this cheesy potato casserole is the ultimate solution. This recipe is scaled perfectly for a 9×13 inch baking dish, easily yielding 8 to 10 substantial servings. Its familiar flavors appeal to all ages, from the pickiest children to the most discerning dinner guests. Serving comfort food that reliably earns rave reviews takes the stress out of hosting. Planning a game day or weekend feast? Pair this delicious bake with a hearty soup, like our recipe for Loaded Potato Soup, for a guaranteed cozy meal.

Simplicity and Make-Ahead Magic

One of the most practical benefits of this HashBrown Casserole recipe is its ease of preparation. The steps involve simple thawing, mixing, and baking. No need to pre-boil or chop potatoes! Furthermore, this is an excellent make-ahead dish. You can fully assemble the casserole (without the topping) and refrigerate it up to 24 hours in advance. When ready to serve, just let it come closer to room temperature while the oven preheats, add the topping, and bake. This makes holiday meal preparation significantly less hectic. Its forgiving nature and minimal hands-on time mean you spend less time stirring and more time enjoying your guests or relaxing. This flexibility is what transforms a good recipe into a truly indispensable one.

Why This HashBrown Casserole Recipe Should Be Your Next Side Dish

There are countless versions of cheesy potato casseroles out there, but our detailed approach ensures maximum creaminess and flavor depth. We focus on the quality of ingredients and critical steps like thawing the potatoes correctly, which are often overlooked but are essential for the perfect outcome. Beyond its delicious taste, incorporating this casserole into your menu offers significant practical advantages, especially for busy individuals looking for impactful recipes with low effort.

A Versatile Dish for Every Occasion

While often associated with Easter, Thanksgiving, or Christmas dinners where it stands shoulder-to-shoulder with stuffing and green bean casserole the HashBrown Casserole is remarkably versatile. It works equally well as a main-course accompaniment to grilled chicken, baked ham, or steak, or as the centerpiece of a decadent breakfast or brunch spread. Imagine serving this alongside scrambled eggs and crispy bacon! It transitions effortlessly between formal holidays and casual weekend meals. Need a quick but impressive potluck dish? This casserole travels wonderfully and holds heat well, cementing its status as the perfect savory offering.

Economical and Accessible Ingredients

Building an impressive meal doesn’t have to break the bank. The ingredients required for this classic cheesy potato casserole are pantry staples and readily available, keeping the cost per serving surprisingly low. Frozen hash browns are economical, and the creamy base relies on canned soup and sour cream items that often have a long shelf life. This makes the HashBrown Casserole an extremely budget-friendly recipe, proving that delicious, high-quality comfort food doesn’t require expensive specialty components. Just like our focus on simple yet impactful desserts, such as Easy Chocolate Cake Recipe, this casserole prioritizes accessible flavor.

Mastering the Creamy Consistency

The secret to avoiding a dry or crumbly casserole is the precise balance of liquids and fats. In this recipe, we use melted butter in two stages: half is incorporated directly into the base mixture, enhancing the savory richness, and the other half is used to coat the topping, guaranteeing a golden crunch. The combination of sour cream and condensed soup creates a thick, resilient sauce that coats every potato shred and resists drying out during the long bake time. By following the detailed mixing instructions, you ensure a uniform, creamy consistency from the center to the edges, defining what a truly classic HashBrown Casserole should be.

Ingredients and Necessary Utensils for the Perfect HashBrown Casserole

Success in making this creamy side dish starts with careful attention to the ingredients and preparation, particularly the status of the hash browns. Skipping the thawing process is a common pitfall that leads to a watery or unevenly cooked casserole. We break down exactly what you need and why each component is vital for achieving the desired creamy, cheesy, and crispy results.

Detailed Ingredient List and Preparation Notes

Achieving the perfect flavor profile in your HashBrown Casserole relies on high-quality ingredients and specific preparation steps. Make sure to gather everything before you start mixing (mise en place).

For the Casserole Base:

  • 1 (30 ounce) bag frozen shredded hash brown potatoes: This is the foundation. Crucially, these must be completely thawed. Thawing takes several hours in the refrigerator or about 30 minutes on the counter if spread out. If you try to bake them frozen, the excess ice crystals will introduce too much moisture, diluting the creamy sauce.
  • 1 (10.5 ounce) can cream of chicken soup (or cream of mushroom): This provides the necessary savory, emulsified base. Cream of chicken offers a rich flavor, but cream of mushroom is an excellent substitute for vegetarians or if you prefer an earthier taste.
  • 1 (16 ounce) container sour cream: Sour cream is essential for tanginess and creaminess. It cuts through the richness of the butter and cheese, balancing the overall flavor profile. Full-fat sour cream yields the best, most decadent results.
  • 1/2 cup (1 stick) unsalted butter, melted: Butter is critical for richness and texture. Ensure it is fully melted and incorporated into the liquid mix before adding the solids.
  • 1/2 cup finely chopped yellow onion (optional, but recommended): While optional, finely chopped onion adds a savory depth and aromatic quality that elevates the casserole beyond simple cheese and potatoes. Make sure the onion is diced very small so it cooks thoroughly and blends seamlessly into the creamy base.
  • 2 cups shredded sharp cheddar cheese: Use sharp cheddar for the best flavor impact. Pre-shredded cheese works for convenience, but freshly grating your cheese (which often contains fewer anti-caking agents) yields a smoother, meltier result.
  • 1 teaspoon salt: Essential for seasoning the potatoes and the creamy sauce. Potatoes are bland and require generous seasoning.
  • 1/2 teaspoon black pepper: Adds a subtle warmth and pepperiness that complements the cheese and potatoes.

For the Topping:

  • 1/4 cup (1/2 stick) unsalted butter, melted: Used specifically for coating the crunch component, guaranteeing a rich, golden topping.
  • 2 cups crushed corn flakes (or crushed Ritz crackers): This is where you customize the crunch. Corn flakes provide a lighter, slightly sweet crispness, while crushed Ritz crackers deliver a buttery, salty snap that leans more savory. Crush them finely, but not into a powder you want texture.
  • 1/2 cup shredded sharp cheddar cheese: This layer is sprinkled over the crust mixture to ensure the topping adheres nicely and finishes with a beautiful, gooey cheese pull.

Recommended Tools and Utensils for Success

Having the right tools for your HashBrown Casserole ensures smooth mixing and perfect baking. This recipe doesn’t require specialized equipment, but a few items are indispensable for efficiency and quality.

  • 9×13 Inch Baking Dish: This is the standard size for this volume of ingredients. Ensure you lightly grease it before adding the mixture to prevent sticking, especially around the edges. A ceramic or glass dish works perfectly.
  • Very Large Mixing Bowl: You will be combining nearly four pounds of ingredients (potatoes, soup, sour cream, cheese). A standard salad bowl might be too small, leading to spillage and difficult folding. Choose the largest mixing bowl you own to allow ample room for folding the hash browns without damaging their texture.
  • Whisk: Necessary for thoroughly combining the wet ingredients (soup, sour cream, melted butter) into a smooth, emulsified sauce. This step must be done before adding the potatoes.
  • Large Rubber Spatula or Wooden Spoon: Essential for gently folding the thawed hash browns into the creamy base. Using a whisk or mixer at this stage can break the potato shreds, resulting in a mushy texture. Gentle folding maintains the integrity of the potato structure.
  • Small Saucepan or Microwave-Safe Bowl: For melting the butter quickly and efficiently, both for the base and the topping.
  • Measuring Cups and Spoons: Accuracy in comfort food recipes is key, especially with salt and pepper, to prevent the dish from becoming overly seasoned or bland.

Detailed Step-by-Step Instructions for the Ultimate HashBrown Casserole

Following these specific steps ensures your casserole achieves the ideal blend of creamy, cheesy interior and crunchy, golden-brown crust. Pay close attention to the timing for adding the topping it’s crucial for maximum crispness.

Preparation: The Foundation of Flavor

  1. Preheat and Prepare the Dish: Preheat your oven to 350°F (175°C). This medium heat is perfect for slowly cooking the potatoes through without scorching the edges. Lightly grease a 9×13 inch baking dish. Use butter, cooking spray, or even a light layer of oil.
  2. Thaw the Potatoes Completely: This step cannot be rushed. Ensure the 30-ounce bag of frozen shredded hash brown potatoes is completely thawed. If they still feel icy, spread them out on a clean kitchen towel or tray for 10–15 minutes. Excess moisture from ice crystals is the enemy of creamy casserole texture.

Mixing the Casserole Base: Creamy Perfection

  1. Create the Wet Base: In a very large mixing bowl, combine the can of cream of chicken soup (or cream of mushroom), the full 16-ounce container of sour cream, and the 1/2 cup of melted butter. Whisk thoroughly until the mixture is smooth and evenly combined. There should be no lumps of sour cream remaining.
  2. Season and Flavor: Stir in the finely chopped yellow onion (if using), 1 teaspoon of salt, and 1/2 teaspoon of black pepper. Mix these seasonings well into the wet base. Tip: If you want to increase the savoriness, you can add 1 teaspoon of garlic powder at this stage.
  3. Add the Cheese: Gently fold in the 2 cups of shredded sharp cheddar cheese. Incorporating the cheese now ensures it melts evenly throughout the entire potato base during baking, rather than pooling on top.
  4. Combine Hash Browns: Add the fully thawed hash brown potatoes to the liquid mixture. Use a large spoon or spatula to fold the hash browns into the creamy base until they are evenly coated. Crucial Tip: Fold gently. Do not stir vigorously, as this can break down the starch and make the final casserole mushy. The goal is just even coating.

Baking the Casserole: Setting the Stage

  1. Transfer and Level: Pour the entire hash brown mixture evenly into the prepared 9×13 inch baking dish. Spread the mixture out to the edges using the back of a spoon, creating a flat, level surface.
  2. Initial Bake: Bake in the preheated oven for 40 to 45 minutes. The goal of this initial bake is to heat the potatoes through, allow the sauce to thicken, and encourage the edges to start bubbling. The top should be lightly set but not yet golden brown.

Adding the Topping and Finishing Touches

  1. Prepare the Topping: While the casserole is baking, prepare the topping. In a small bowl, combine the 1/4 cup of melted butter and the 2 cups of crushed corn flakes (or crackers). Toss thoroughly until the corn flakes are completely coated in butter. The butter is key to creating that desirable golden-brown crunch. For more delicious recipe ideas and plating inspiration, follow my external Pinterest board Cocina Facilita Blog.
  2. Add the Crunch: After the initial 40-45 minute baking period, carefully remove the casserole from the oven.
  3. Layer the Topping: Sprinkle the buttered corn flake (or cracker) mixture evenly over the top of the hot casserole, covering the entire surface. Sprinkle the remaining 1/2 cup of shredded cheddar cheese over the corn flakes. This final layer of cheese helps anchor the topping and adds visual appeal.
  4. Final Bake: Return the casserole to the oven and bake for an additional 10 to 15 minutes. This shorter, final bake is designed specifically to crisp the topping. Bake until the topping is golden brown and crispy and the cheese has melted completely and is lightly browned.
  5. Rest Before Serving: Remove the casserole from the oven and let it rest for 5 to 10 minutes before serving. This resting time is vital, as it allows the creamy potato base to set up properly, making serving neat and easy. Serving immediately will result in a runny dish. This classic HashBrown Casserole is ready to enjoy!

Tips, Tricks, and Delicious HashBrown Casserole Variations

While the classic recipe is perfect on its own, one of the best things about the HashBrown Casserole is its adaptability. You can easily customize it to suit dietary needs, flavor preferences, or holiday themes. These tips help ensure your potato bake is flawless every time.

Pro Tips to Avoid Common Mistakes

  • Addressing Thawing: As mentioned, the single most critical step is ensuring the hash browns are completely thawed. If your casserole turns out watery, it is almost certainly due to residual ice crystals melting in the oven. If your potatoes are still wet after thawing, gently pat them dry with a paper towel.
  • Preventing Sticking: Always grease the baking dish well. The cheese and creamy sauce can bond tightly to the glass or ceramic, making cleanup difficult if the dish is not prepped.
  • Pre-shredded vs. Freshly Shredded Cheese: If using pre-shredded cheese, toss it with a teaspoon of flour before adding it to the mixture. This tiny trick prevents the anti-caking agents from interfering with the melt, resulting in a creamier sauce.
  • Don’t Over-mix: Once the potatoes are added, use a gentle folding motion. Over-mixing releases starch, which can lead to a gluey texture instead of a creamy one.

Flavor and Ingredient Alternatives

You can easily tweak this recipe to create unique flavor profiles, transforming a simple cheesy potato casserole into something new and exciting.

Protein Boosts:

  • Breakfast Casserole Style: Stir in 1 cup of cooked, crumbled bacon or diced breakfast sausage along with the cheese. This turns the side dish into a substantial breakfast HashBrown Casserole.
  • Holiday Ham: If serving during the holidays, adding 1 to 1.5 cups of diced cooked ham is a perfect way to use up leftovers and add smoky flavor.
  • Spicy Chicken Base: Instead of plain cream of chicken soup, use a can of cream of celery or even substitute a homemade white sauce spiced with a dash of cayenne. For a flavor reminiscent of a hearty meal, consider pairing it with a soup like our White Chicken Chili.

Spice and Vegetable Additions:

  • Southwestern Kick: Stir in a small can (4 oz) of drained, diced green chiles and 1/2 teaspoon of chili powder into the base mixture. Use a blend of cheddar and Monterey Jack cheese.
  • Garlic Lover’s Delight: Sauté 2 cloves of minced garlic with the chopped onion before adding them to the mixture for a deeper, more robust flavor.
  • Green Vegetables: For added color and nutrition, stir in 1 cup of thawed, drained frozen peas or finely chopped green bell pepper.

Dietary Modifications (Gluten-Free and Vegetarian Options)

The beauty of this recipe is how easily it can be adapted without sacrificing flavor:

  • Gluten-Free HashBrown Casserole: The main gluten-containing elements are the condensed soup and the corn flake/cracker topping.
    • Soup Substitution: Use a certified gluten-free cream of mushroom soup, or replace the canned soup entirely with a homemade gluten-free béchamel sauce (using GF flour).
    • Topping Swap: Instead of corn flakes or Ritz crackers, use certified gluten-free crispy rice cereal or finely crushed pork rinds (chicharrones) for a savory, keto-friendly crunch.
  • Vegetarian Version: Easily achieved by swapping the cream of chicken soup for cream of mushroom soup or cream of celery soup. Ensure all butter used is unsalted dairy butter, or swap for a plant-based butter alternative.
  • Dairy-Free/Vegan Option: This is a more involved switch but completely doable. Substitute the sour cream with a plant-based sour cream or cashew cream. Replace the condensed soup with a thick homemade vegan cream sauce (using oat milk or vegetable broth thickened with cornstarch). Use a high-quality vegan cheddar cheese substitute.

Nutritional Values and Benefits of the Cheesy Potato Bake

The HashBrown Casserole is undeniably a comfort food staple, meaning it is richer and more calorie-dense than a typical vegetable side. However, potatoes and cheese contribute valuable nutrients, making this dish a hearty and satisfying addition to any meal. We provide estimated values based on the ingredients used, emphasizing that specific nutrition can vary based on brand and serving size.

Estimated Nutritional Breakdown (Per 1/10 Serving)

Please note these are estimates based on standard commercial ingredients for a 1/10 serving size (approximately 1 cup):

Nutrient Estimated Value Benefit/Source
Calories 380 – 450 kcal Provides immediate energy for the body.
Protein 12 – 15 grams Derived mainly from cheese and cream of chicken soup; essential for muscle repair.
Total Fat 28 – 35 grams Primary source is butter, sour cream, and cheese; provides satiety and flavor.
Saturated Fat 18 – 22 grams Contributes to the dish’s creamy texture.
Carbohydrates 25 – 30 grams Mainly from the hash browns (potatoes) and corn flakes; provides sustained energy.
Fiber 2 – 3 grams Primarily from potatoes; supports digestive health.
Sodium 650 – 800 mg Source is condensed soup and added salt. (Can be reduced by using low-sodium soup).

Nutritional Benefits of Key Ingredients

While often viewed purely as an indulgence, the ingredients in this cheesy potato casserole offer specific nutritional advantages:

Potatoes (Hash Browns)

Potatoes are often misunderstood. They are highly nutrient-dense, especially when their skin is included (though shredded hash browns usually lack the skin, they retain other nutrients). They are an excellent source of complex carbohydrates, which provide sustained energy. Furthermore, potatoes are rich in Vitamin C, which acts as an antioxidant, and are a significant source of Potassium, an electrolyte vital for heart and nerve function. The large quantity of potato used in this HashBrown Casserole ensures a substantial serving of these beneficial micronutrients.

Dairy Components (Cheese and Sour Cream)

The dairy in this casserole is integral not just for flavor but for nutrition. Cheese is a powerhouse of calcium, which is essential for strong bones and teeth. It is also packed with high-quality protein and B vitamins. Sour cream contributes beneficial bacteria (probiotics) and adds healthy fats that aid in the absorption of fat-soluble vitamins (A, D, E, and K). By using sharp cheddar, we maximize flavor impact while utilizing a relatively nutrient-dense dairy product.

Focusing on Balance

To enjoy this hearty dish responsibly, consider balancing it with lighter accompaniments. Serving the HashBrown Casserole alongside a lean protein (like grilled fish or turkey) and a large green salad helps moderate the overall meal’s caloric intake while still allowing you to indulge in this classic comfort food. Given its high satiety levels, a serving of this potato bake is often quite filling, acting as a satisfying centerpiece starch.

Frequently Asked Questions (FAQs) About HashBrown Casserole

Can I make HashBrown Casserole ahead of time?

Absolutely. You can mix the base ingredients (steps 1–6) and place them in the prepared baking dish up to 24 hours in advance. Cover tightly with plastic wrap and refrigerate. When ready to bake, let it sit on the counter for 30 minutes while the oven preheats, then add the topping and bake as directed (you may need an extra 5–10 minutes on the initial bake since the ingredients are cold).

Why are my hash browns dry or watery?

Watery casserole typically occurs if the frozen hash browns were not fully thawed before mixing, leading to ice crystals melting in the oven. Dryness usually results from over-baking or not using enough liquid (sour cream and soup). Ensure the potatoes are fully thawed and follow the precise measurements for the creamy base.

What is the best type of cheese for a classic cheesy potato casserole?

Sharp cheddar cheese is highly recommended because its distinct flavor stands up well to the richness of the soup and sour cream, providing the perfect balance of tang and saltiness. Monterey Jack or Colby Jack are good alternatives if you prefer a milder flavor and slightly stringier texture in your HashBrown Casserole.

Can I freeze leftover HashBrown Casserole?

Yes, HashBrown Casserole freezes very well, both baked and unbaked. If freezing baked leftovers, cut them into individual portions, wrap them tightly, and freeze for up to three months. Reheat covered in a 350°F oven until hot throughout. Freezing unbaked is best done without the crispy topping; add the topping fresh before the final bake.

How do I get a truly crispy topping?

The secret to a truly crispy topping is timing and butter. Ensure the corn flakes or crackers are thoroughly coated in melted butter (step 9). Crucially, the topping should only be added during the last 10–15 minutes of baking, after the base is mostly set. This prevents the topping from becoming soggy during the longer initial bake.

Conclusion: The Timeless Appeal of the Creamy HashBrown Casserole

The Classic Creamy HashBrown Casserole is more than just a recipe; it’s a time-honored tradition that brings warmth and comfort to any table. By focusing on a few key steps thawing the potatoes properly, achieving a smooth and savory liquid base, and perfecting the timing of the crispy topping you can effortlessly master this beloved dish. This recipe provides a guaranteed success, yielding a casserole that is rich, cheesy, and features that unbeatable contrast between a smooth interior and a buttery, crunchy crust.

Whether you choose the classic cream of chicken base or venture into savory mix-ins like ham and green chiles, this cheesy potato casserole remains universally appealing. It is the perfect centerpiece for a holiday feast, a reliable potluck star, or simply a comforting side dish on a chilly evening. Its simplicity and make-ahead capabilities are invaluable for busy cooks looking to deliver high-impact flavor with minimal fuss.

We encourage you to try this ultimate version of the HashBrown Casserole for your next family meal. Don’t forget to experiment with the topping a crunchy Ritz cracker crust or a corn flake crunch both offer distinct, delicious results. Once you experience the depth of flavor and creamy texture of this homemade potato bake, it will quickly become your go-to recipe. If you enjoyed preparing this dish, let us know your favorite topping variation in the comments below, or share this recipe with friends looking for the ultimate cheesy side dish inspiration!

Classic Creamy Hash Brown Casserole

This comforting, cheesy hash brown casserole features a rich, creamy sauce and is topped with a crunchy, buttery corn flake topping, making it perfect for breakfast, brunch, or holiday dinners.
Prep Time 15 minutes
Cook Time 55 minutes
Total Time 1 hour 10 minutes
Servings: 10 servings
Course: Breakfast, Brunch, Side Dish
Cuisine: American, Southern
Calories: 380

Ingredients
  

Casserole Base
  • 1 (30 ounce) bag frozen shredded hash brown potatoes thawed completely
  • 1 (10.5 ounce) can cream of chicken soup or cream of mushroom
  • 1 (16 ounce) container sour cream
  • 1/2 cup (1 stick) unsalted butter, melted
  • 1/2 cup finely chopped yellow onion optional, but recommended
  • 2 cups shredded sharp cheddar cheese
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
Topping
  • 1/4 cup (1/2 stick) unsalted butter, melted
  • 2 cups crushed corn flakes or crushed Ritz crackers
  • 1/2 cup shredded sharp cheddar cheese for topping

Equipment

  • Very Large Mixing Bowl
  • 9x13 inch baking dish
  • Whisk

Method
 

Preparation and Mixing
  1. Preheat your oven to 350°F (175°C). Lightly grease a 9x13 inch baking dish.
  2. In a very large mixing bowl, combine the can of cream of chicken soup, the full container of sour cream, and the 1/2 cup of melted butter. Whisk thoroughly until the mixture is smooth and evenly combined.
  3. Stir in the finely chopped yellow onion (if using), 1 teaspoon of salt, and 1/2 teaspoon of black pepper. Mix well.
  4. Gently fold in the 2 cups of shredded cheddar cheese used for the base.
  5. Add the fully thawed hash brown potatoes to the creamy base. Use a large spoon or spatula to fold the hash browns into the liquid mixture until they are evenly coated. Do not overwork the potatoes.
Baking and Topping
  1. Pour the entire hash brown mixture evenly into the prepared 9x13 inch baking dish. Spread the mixture out to the edges.
  2. Bake in the preheated oven for 40 to 45 minutes, or until the casserole is hot, bubbly around the edges, and the top is lightly golden brown.
  3. While the casserole is baking, prepare the topping. In a small bowl, combine the 1/4 cup of melted butter and the 2 cups of crushed corn flakes (or crackers). Toss until the corn flakes are completely coated in butter.
  4. After the initial 40-45 minute baking period, carefully remove the casserole from the oven.
  5. Sprinkle the buttered corn flake mixture evenly over the top of the hot casserole. Sprinkle the remaining 1/2 cup of shredded cheddar cheese over the corn flakes.
  6. Return the casserole to the oven and bake for an additional 10 to 15 minutes, or until the topping is golden brown and crispy and the cheese has melted completely.
  7. Remove the casserole from the oven and let it rest for 5 to 10 minutes before serving. This allows the casserole to set and makes serving easier.

Notes

Ensure the hash browns are completely thawed and excess liquid is drained or pressed out before mixing, or the casserole may be watery. If you prefer a milder flavor, substitute cream of mushroom soup for cream of chicken. This casserole can be assembled the night before; cover and refrigerate, then add about 15 minutes to the initial baking time.

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