Creating the perfect chewy snickerdoodle cookies is easy when you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper.
2. Mix Dry Ingredients: In a medium bowl, whisk together the flour, cream of tartar, baking soda, and salt. Set aside.
3. Cream the Butter and Sugars: In a large bowl, use an electric mixer to cream the softened butter, granulated sugar, and brown sugar until light and fluffy.
4. Add Eggs and Vanilla: Beat in the eggs one at a time, followed by the vanilla extract, mixing until well combined.
5. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, mixing just until combined. Be careful not to overmix.
6. Prepare Cinnamon-Sugar Mixture: In a small bowl, combine the granulated sugar and ground cinnamon for rolling.
7. Shape Cookies: Use a cookie scoop or tablespoon to portion out the dough. Roll each portion into a ball, then roll in the cinnamon-sugar mixture.
8. Place on Baking Sheet: Arrange the coated cookie dough balls on the prepared baking sheets, leaving enough space between them to spread.
9. Bake: Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden. The centers may look slightly underbaked, which is perfect for a chewy texture.
10. Cool: Remove from the oven and let the cookies cool on the baking sheets for about 10 minutes before transferring them to a wire rack to cool completely.

These steps will guide you in creating the most incredible chewy snickerdoodle cookies that will surely impress anyone who tries them!