1 Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9×13 inch pan.
2 In a large bowl, mix flour, sugar, baking powder and salt.
3 In a separate bowl, combine bananas, egg, melted butter and milk.
4 Stir banana mixture into flour mixture until blended. Be careful not to over mix.
5 Stir in chocolate chips.
6 Pour batter into 9×13 inch pan. Bake at 350 degrees F (175 degrees C) 30 to 35 minutes, or until a toothpick inserted into center of cake comes out clean. (It will have some melted chocolate, but no crumbs.)