INGREDIENTS
1
Egg, large
1 cup
All purpose flour
1 tsp
Baking powder
1/2 cup
Brown sugar, dark
1/2 cup
Cocoa powder
1 cup
Confectioners' sugar
1/2 cup
Rainbow sprinkles
1/2 tsp
Salt
1 pinch
Salt
1 tsp
Vanilla extract
3 tbsp
Butter, unsalted
1/4 cup
Heavy cream
1/2 cup
Milk