INGREDIENTS
1/2 cup
butter, softened
1 cup
granulated sugar
1
egg
1 tsp
vanilla extract
3
medium bananas, mashed
1 1/2 cups
flour
1 tsp
baking powder
1 tsp
baking soda
1/2 tsp
salt
1/4 cup
baking cocoa
1/4 cup
nutella, melted (optional)
1/4 cup
walnuts (optional)