01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, ground cinnamon, baking soda, and salt in a medium bowl.
03 - Beat the softened butter and granulated sugar in a large bowl until light and fluffy, approximately 2 minutes.
04 - Add the egg and pure vanilla extract to the butter-sugar mixture and mix until fully combined.
05 - Gradually add the dry ingredients to the wet mixture, stirring just until a soft dough forms.
06 - Mix 2 tablespoons granulated sugar and 1 teaspoon ground cinnamon in a small bowl.
07 - Scoop tablespoon-sized portions of dough, roll into balls, and coat each thoroughly with the cinnamon-sugar mixture.
08 - Place the coated dough balls on the prepared baking sheets, spacing them approximately 2 inches apart.
09 - Bake for 11 to 13 minutes, until edges are set and centers remain slightly soft.
10 - Allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.