Prep your pan and oven. Heat the oven to 350°F (175°C). Line a 9x5-inch loaf pan with parchment paper, leaving overhang for easy lifting.
Lightly grease the sides.
Mash the bananas. In a large bowl, mash the bananas until fairly smooth. A few small lumps are fine.
Whisk in the wet ingredients. Add eggs, maple syrup (or honey), melted coconut oil (or butter), and vanilla. Whisk until well combined and glossy.
Combine the dry ingredients. In another bowl, whisk together almond flour, tapioca starch, baking soda, baking powder, salt, and cinnamon.
Bring it together. Add the dry mixture to the wet mixture.
Stir with a spatula until just combined. The batter will be thick but scoopable. Fold in chocolate chips or nuts if using.
Fill the pan. Scrape the batter into the prepared pan and smooth the top.
For a pretty finish, sprinkle a few extra chips or nuts over the surface.
Bake. Bake for 50–65 minutes, or until the top is deeply golden and a toothpick inserted in the center comes out mostly clean with a few moist crumbs. If the top browns too quickly, tent loosely with foil during the last 15 minutes.
Cool properly. Let the bread cool in the pan for 15 minutes, then use the parchment to lift it onto a wire rack. Cool completely before slicing to help it set.
Slice and enjoy. Use a sharp serrated knife for clean slices.
Serve plain, with butter, or a swipe of nut butter.