Funfetti Cake

INGREDIENTS

2 cups

cake flour (make your own by combining 1¾ cup all-purpose flour + ¼ cup cornstarch)

1/2 cup

all-purpose flour

2 1/4 tsp

baking powder

3/4 tsp

salt

1 cup

unsalted butter, at room temperature and cubed

1 1/2 cups

granulated sugar

large egg whites

6 tbsp

vegetable oil

2 tbsp

clear imitation vanilla (I did not use clear vanilla)

1 cup

whole milk

2/3 cup

plus 1 tablespoon sprinkles

2 cups

unsalted butter, cubed and room temperature

3 cups

powdered sugar

2 tsp

clear imitation vanilla extract (again, I didn't use clear)

salt

additional sprinkles, for decoration (optional)