Preheat the oven to 350°F. Grease a loaf pan and dust with flour. Set aside.
In a large bowl combine the whole wheat flour, vegan chocolate chips, walnuts, baking powder, baking soda, salt, cinnamon, and nutmeg.
In a medium bowl, mash the 2 very ripe bananas. Add the applesauce, maple syrup, vanilla and flaxegg. Mix well to combine. Add the wet ingredients to the dry ingredients. Mix unti just combined.
Pour banana bread batter into the prepared loaf pan. Top with sliced bananas.
Bake for 45 minutes until a toothpick inserted in the center (avoiding the banana slices) comes out clean.
Allow to cool on a cooling rack for at least 30 minutes before slicing. Serve warm with a dollup of plant-based yogurt, smeared with more peanut butter, or a drizzle of melted chocolate. Store leftovers in the refrigerator or freeze slices for up to 3 months.