INGREDIENTS
3
Eggs, large
2 1/2 cups
All-purpose flour
2 3/4 tsp
Baking powder
1 cup
Brown sugar, packed light
1/2 cup
Granulated sugar
2 1/2
lbs Powdered sugar
1 tsp
Salt, fine
6 1/2 tsp
Vanilla
2 1/2 cups
Butter, unsalted
1/2 cup
Buttermilk
3/4 cup
Sour cream
2 1/4 cups
Sun butter
1/3 cup
Whole milk or heavy cream