INGREDIENTS
4
Egg whites, large
2 1/4 tsp
Baking powder
2 1/2 cups
Cake flour
2 2/3 tbsp
Clear imitation vanilla
3 cups
Powdered sugar
3/4 tsp
Salt
1 pinch
Salt
1 1/2 cups
Sugar
6 tbsp
Vegetable oil
3 cups
Butter, unsalted
1 cup
Whole milk
2/3 cup plus 1 tablespoon sprinkles (see headnote)