1/2 cup butter or margarine, softened
1 egg
1-1/2 cups mashed ripe bananas
1 teaspoon baking powder
1/2 teaspoon salt
1 cup sugar
1 teaspoon vanilla extract
1-1/2 cups flour
1 teaspoon baking soda
1/4 cup baking cocoa

 

In a mixing bowl, cream butter and sugar. Add egg and vanilla; beat until thoroughly combined. Blend in bananas. Combine flour, baking soda, baking powder, and salt; add to creamed mixture and mix well. Divide batter in half. Add cocoa to 1/2 of mix; spread into a greased 13 x 9-inch baking pan. Spoon remaining batter on top and swirl with a knife. Bake at 350o F for 25 minutes or until the bars test done. Cool. Freezes well. Makes: 2-1/2 to 3 dozen.