INGREDIENTS
1
box devil's food cake mix
3
eggs
1/2 cup
oil or melted butter (cooled)
3/4 cup
buttermilk
1/2 cup
sour cream
2 tsp
vanilla extract
1 cup
butter (softened (not melted))
1/3 cup
brown sugar (packed (make sure there are no rock-hard chunks))
1 tsp
vanilla extract
3 cups
powdered sugar