Preheat the oven to 350 degrees. Place your peeled bananas in a large mixing bowl and mash them together. Add the honey and melted butter, and mix well. In a separate bowl, whisk together the whole wheat flower and baking soda, then mix thoroughly into the banana, butter, and honey mixture. Add your walnuts, chocolate chips, or other additive - about a quarter cup for most, or to taste. Spray your loaf pan with non-stick spray and bake for 30 minutes, testing to be sure a toothpick stuck in the middle of the loaf comes out clean.