INGREDIENTS
2
Egg whites
1 1/4 tsp
Baking powder
1 1/4 cups
Cake flour
1 cup
Cake mix, yellow
1 cup
Confectioner's sugar
3/4 cup
Granulated sugar
1/4 tsp
Salt
2 tbsp
Sprinkles
1 2/3 tbsp
Vanilla
12 tbsp
Butter, unsalted
3 tbsp
Heavy cream
1/2 cup
Sour cream
1/4 cup
Whole milk