INGREDIENTS
3
Bananas, super-ripe
1
Egg plus, large
1 cup
All-purpose flour
1 tsp
Baking soda
1 cup
Chocolate chips, semisweet
1/2 cup
Cocoa powder
1/4 tsp
Kosher salt
3/4 cup
Sugar
1 tsp
Vanilla extract, pure
1
Cooking spray
1/2 cup
Butter
1/4 cup
Buttermilk or sour cream