Black Bottom Banana Bars

Delicious and very moist. Even better the second day.

In a mixing bowl , cream butter and sugar.

Add egg and vanilla.

Beat until thoroughly combined.

Blend in the bananas.

Combine the flour , baking powder , baking soda and salt.

Add to creamed mixture and mix well.

Divide batter in half.

Add cocoa to half.

Spread into a greased 13-in x 9-in pan.

Spoon remaining batter on top and swirl with a knife.

Bake at 350 degrees for 25 minutes or until the bars test done.

Cool.

butter, sugar, egg, vanilla extract, bananas, all-purpose flour, baking powder, baking soda, salt, baking cocoa