Preheat oven to 400°F. Line baking sheet with parchment paper or a baking mat.
In a medium bowl or the bowl of your mixer, combine ¾ cup sugar, brown sugar, and butter. Beat at a medium speed for 2 minutes or light and fluffy. Add the vanilla and egg and mix until you no longer see the egg yolk.
1 cup sugar, divided, ⅓ cup brown sugar, ½ cup unsalted butter, softened, 1 teaspoon vanilla, 1 egg
In a separate medium bowl, combine the flour, baking powder, 1 teaspoon cinnamon, and salt. Stir with a whisk to combine. Add the flour mixture to the sugar mixture and beat on low just until combined.
1 ½ cup flour, 1 teaspoon baking powder, 3 teaspoon cinnamon, divided, ¼ teaspoon salt
In a small bowl, combine the remaining ¼ cup sugar and 2 teaspoons cinnamon. Stir to combine.
1 cup sugar, divided, 3 teaspoon cinnamon, divided
Using a small cookie scoop (1 ½ tablespoons), scoop dough and place on baking sheet. Working with one dough ball at a time, roll the dough into a ball and then roll in the cinnamon and sugar mixture.
Place cookies about 2 inches apart on cookie sheets. Bake on middle rack of oven for 8-10 minutes or until just starting to brown around the edges. Cool on pans for 5 minutes before removing them to a wire rack to cool completely.