Ingredients
Equipment
Method
Prepare Dough Base
- In a medium bowl, whisk together the 2 ¾ cups of all-purpose flour, 2 teaspoons of cream of tartar, 1 teaspoon of baking soda, and ½ teaspoon of salt. Set this dry mixture aside.
 - In the bowl of a stand mixer fitted with the paddle attachment, cream the 1 cup of softened butter and 1 ½ cups of granulated sugar together on medium-high speed. Beat for 3 to 4 minutes until the mixture is light, pale, and fluffy. This aeration is crucial for a chewy texture.
 - Reduce the speed to low and beat in the 2 large eggs one at a time, ensuring each egg is fully incorporated before adding the next. Stir in the 1 teaspoon of vanilla extract. Scrape down the sides of the bowl as needed.
 - Combine Wet and Dry: With the mixer set to low speed, gradually add the reserved dry ingredients to the wet mixture. Mix only until just combined; do not overmix the dough. Stop the mixer as soon as no pockets of flour remain.
 
Bake and Coat
- Prepare Coating and Oven: Preheat your oven to 375°F (190°C). Line two large baking sheets with parchment paper or silicone baking mats. In a shallow, separate bowl, combine the ¼ cup of granulated sugar and 2 tablespoons of ground cinnamon for the coating.
 - Scoop and Roll: Use a 1.5-tablespoon cookie scoop to portion the dough. Roll each piece of dough gently between your palms to form a smooth ball.
 - Coat and Arrange: Drop the dough ball into the cinnamon sugar mixture. Roll until it is completely and generously coated on all sides. Place the coated dough balls onto the prepared baking sheets, ensuring they are spaced about 2 inches apart. (Do not press the dough down.)
 - Bake: Bake for 8 to 10 minutes. The edges should look set and slightly golden, but the centers must still look slightly soft and puffy. Do not overbake, or the cookies will lose their signature chewiness.
 - Cool and Serve: Remove the cookies from the oven and let them cool on the baking sheet for 5 minutes (they are very delicate when hot). Carefully transfer the cookies to a wire rack to cool completely. Store airtight at room temperature for up to 5 days.
 
Notes
If your kitchen is very warm and the dough feels sticky, cover the bowl and chill the dough for 30 minutes before rolling. For extra puffy cookies, ensure your eggs and butter are truly at room temperature. You can freeze the rolled, coated dough balls on a baking sheet, then transfer them to an airtight bag. Bake frozen cookies for 1-2 minutes longer than the recipe calls for.
