Preheat oven to 325 degrees F. Prepare pan with cooking spray.
Mix the wet ingredients and stir till blended.
Combine the dry ingredients in a separate bowl. Stir into the banana mixture until well blended. Fold in chocolate chips. Pour batter into prepared bread pan, and top with walnuts, or anything you like!
Bake in preheated oven for 1 hour, or until a knife inserted in the center comes out clean. Cover and cool for 10 minutes before removing from pan.