INGREDIENTS
4
Eggs, large
2 1/4 cups
All-purpose flour
2 tsp
Baking powder
1/2 tsp
Baking soda
2 tsp
Bourbon or vanilla extract
1/4 cup
Brown sugar, light packed
4 cups
Confectioners' sugar
1/4 cup
Cornstarch
1 1/2 cups
Granulated sugar
3/4 tsp
Salt
1
Sprinkles
1 1/2 tsp
Vanilla extract
1 cup
Butter, unsalted
1 1/2 cups
Butter, unsalted VERY soft
2 tbsp
Heavy cream
1 1/4 cups
Sour cream, full-fat
1/2 cup
Whole milk
1/2 cup
Rainbow sprinkles (see post for more info on this)