Choco Banana Bars

Ingredients 1 cup All purpose flour 1/2 tsp. Baking powder 1/4 tsp. Salt 1/2 cup oil/butter 1 cup Brown Sugar 3 pcs. Eggs 1 tsp. Vanilla 1/2 cup Cocoa 1/4 cup Chocochips/Chunks 2 pcs. Banana