INGREDIENTS
3 cups
all-purpose flour
2 tsp
baking soda
1/2 tsp
salt
1 cup
unsalted butter, at room temperature
2 cups
granulated white sugar
2 tsp
vanilla extract
2
large eggs
1 1/2
to 1 3/4 cups mashed very ripe bananas (about 4 medium)
1 cup
sour cream or plain yogurt