INGREDIENTS
1 cup
butter
2 cups
granulated sugar
1
vanilla bean
6
egg whites
3 1/4 cups
cake flour
3 1/2 tsps
baking powder
1 tsp
coarse kosher salt
2 1/2 cups
buttermilk
1 1/2 cups
butter
3 cups
powdered sugar
1 tbsp
meringue powder
1/8 tsp
coarse kosher salt
1 1/2 tsps
vanilla extract
1 tbsp
cream