snickerdoodle recipe

Ingredients: 1 cup unsalted butter, softened 1 1/2 cups granulated sugar 2 large eggs 2 3/4 cups all-purpose flour 2 teaspoons cream of tartar 1 teaspoon baking soda 1/2 teaspoon salt 1 tablespoon ground cinnamon 1/4 cup granulated sugar (for rolling the cookies)