Ingredients
1/2 cup butter — softened
1 cup sugar
1 egg
1 teaspoon vanilla extract
1 1/2 cups mashed bananas — about 3 medium
1 1/2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1/4 cup cocoa
Instructions
Combine cream butter and sugar in a mixing bowl.
Add egg and vanilla; beat until thoroughly combined.
Blend in the bananas. Add 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 9×13-inch baking pan.
Spoon remaining batter on top and swirl with a knife.
Bake at 350 for 25 minutes or until the bars test done. Let stand and cool.
