01 -
Cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
02 -
Blend in the egg and vanilla extract until smooth and well incorporated.
03 -
Sift together the flour, cornstarch, cream of tartar, baking powder, baking soda, and salt. Gradually mix the dry ingredients into the butter mixture until just combined and no flour streaks remain.
04 -
In a separate bowl, combine ground cinnamon with granulated sugar for rolling the dough balls.
05 -
Scoop uniform portions of dough using a cookie scoop, roll each ball in the cinnamon sugar mixture, then place them on a baking sheet lined with parchment paper. Gently press each to approximately 1 inch thickness.
06 -
Bake in a preheated oven at 350°F (175°C) for 10-12 minutes or until edges are lightly golden but centers remain soft.
07 -
While cookies cool, beat together the softened cream cheese, butter, vanilla extract, and powdered sugar until smooth, creamy, and spreadable.
08 -
Spread the cream cheese frosting evenly on cooled cookies, then lightly sprinkle additional cinnamon sugar on top before serving.