Preheat the oven to 350 degrees F. Line a bread pan with parchment paper. Spray the pan with nonstick cooking spray to prevent sticking.
In a large bowl, whisk together the wet ingredients including the mashed bananas, eggs, vanilla, and maple syrup.
In a separate bowl Add in the dry ingredients including the oat flour, cocoa powder, baking soda and salt. Use a wooden spoon to combine. Fold in the chocolate chips, walnuts, and coconut. Pour batter into prepared loaf pan, smoothing the top with a spatula. Sprinkle coconut flakes on top and other toppings of choice.
Bake for 50 minutes-65 minutes or until the tester comes out almost clean in the middle of the bread. Cool bread for 10 minutes in the pan, then remove and transfer to a wire rack to finish cooling completely. Once cool, cut into slices.