Black Bottom Banana Bars

Directions

1. 1
   In mixing bowl, cream butter and sugar.
2. 2
   Add egg and vanilla; beat until thoroughly combined.
3. 3
   Blend in the bananas.
4. 4
   Combine the flour, baking powder, baking soda and salt.
5. 5
   Add to creamed mixture and mix well.
6. 6
   Divide batter in half.
7. 7
   Add cocoa to half.
8. 8
   Spread into a greased 13 x 9-inch baking pan.
9. 9
   Spoon remaining batter on top and swirl with a knife.
10. 10
    Bake at 350° for 25 minutes, or until the bars test done.
11. 11
    Cool.
12. 12
    Yields 2 1/2 to 3 dozen.