INGREDIENTS
2/3 cup
Bananas, ripe
1
Egg, large
1 cup
All-purpose flour
1/2 tsp
Baking soda
1/4 cup
Brown sugar, lightly packed
1/2 cup
Granulated sugar
2 cups
Powdered sugar
1/4 tsp
Salt
1 1/2 tsp
Vanilla
4 tbsp
Butter
1 tbsp
Milk or cream
1/2 cup
Sour cream
4 tablespoons butter, softened or even melted and cooled