Preheat the oven to 350F then line a baking sheet with parchement paper and set aside.
Cream the butter, granulated sugar, and brown sugar together until light and creamy. Add in the egg, lemon juice, vanilla extract, and mix until smooth.
1 stick butter, 1/2 cup granulated sugar, 2 tbsp brown sugar, 1 large egg, 1 tsp vanilla extract, 1/4 tsp lemon juice
Gently mix in the flour, corn starch, baking powder, baking soda, cinnamon, & salt.
1 & 1/2 cup all purpose flour, 2 tbsp corn starch, 1/2 tsp baking powder, 1/4 tsp baking soda, 1/8 tsp cinnamon, 1/4 tsp salt
Scoop out equally sized cookie dough balls and top them with the cinnamon-sugar mixture ( Read make the cinnamon sugar mixture below to see how to make it and top your cookies)
Chill in the freezer for 15 minutes then bake in the preheated oven for 14 minutes. Let the cookies cool on the baking sheet for 10 minutes before transferring to a cooling rack to cool fully.