Snickerdoodle Cookies

Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.

Whisk together flour, cream of tartar, baking soda, and salt.

In another bowl, beat butter, granulated sugar, and brown sugar until light and creamy.

Add eggs and vanilla; mix until combined.

Stir in dry ingredients just until dough forms.

Combine cinnamon and 1/4 cup sugar in a small bowl.

Roll dough into 1-inch balls and coat in cinnamon sugar.

Arrange on baking sheets about 2 inches apart.

Bake for 10–12 minutes, until edges are set and tops crack slightly.

Cool on the sheet for 2 minutes, then transfer to a rack.