INGREDIENTS
2 1/4 cups
cake flour, plus more for dusting the pans
1 cup
whole milk, at room temperature
6
large egg whites, at room temperature
2 tsp
vanilla extract
1 3/4 cups
granulated sugar
4 tsp
baking powder
1 tsp
salt
3/4 cup
unsalted butter, at room temperature
Sprinkles (rainbow jimmies)
1 1/2 cups
unsalted butter, at room temperature
5
cups confectioners sugar, sifted
1/4 tsp
salt
1 tbsp
vanilla extract
3 tbsp
milk or heavy cream
Sprinkles for decorating