INGREDIENTS
1/2 cup
unsalted butter (at room temperature, plus more from the pan)
1 cup
granulated sugar
1/2 cup
light brown sugar
2
large eggs
1 cup
sour cream
1 1/2 tsp
vanilla extract
2 1/4 cups
all-purpose flour
1 tsp
baking soda
1/2 tsp
baking powder
1/2 tsp
salt
1/2 tsp
ground cinnamon
2 cups
mashed ripe bananas (5 brown bananas)
1/2 cup
unsalted butter
3 cups
powdered sugar
3 tbsp
milk
2 tsp
pure vanilla extract
salt