INGREDIENTS
1 3/4 cups
all-purpose flour
1/4 cup
unsweetened cocoa powder
3/4 cup
sugar
1 tsp
baking powder
1/4 tsp
baking soda
1/2 tsp
salt
1 1/2 cups
mashed very ripe bananas
2
large eggs
2 tsp
vanilla extract
1/4 cup
vegetable oil
1/4 cup
sour cream
2/3 cup
semisweet chocolate chips, plus more for topping