1 stick unsalted butter, softened
3/4C brown sugar
1/2C granulated sugar
1 egg
1 tsp Tahitian vanilla extract (or pure vanilla extract)
1C cake flour
1/2C bread flour
1/4C white cake mix (betty crocker)
3/4 tsp baking powder
1/2 tsp baking soda
1/2 tsp salt
3 Tbsp rainbow sprinkles