Preheat oven to 350°F. Line an 8” x 4” loaf pan with parchment paper, leaving extra parchment overhanging the sides of the pan for easy bread removal later. Set aside.
In a medium-size mixing bowl, combine the wet ingredients: mashed banana, maple syrup, melted coconut oil, eggs, vanilla, and apple cider vinegar. Stir together until combined.
Add in the almond flour, tapioca flour, baking soda, cinnamon, and salt. Stir until well-combined.
Add in the chocolate chips, walnuts, or dried cranberries, if using. Stir to evenly distribute.
Pour the mixture into the prepared loaf pan. Bake in preheated oven for 40-50 minutes, or until the top is golden brown, the loaf feels set, and a toothpick or skewer inserted in the center comes out clean.
Let cool for 10 minutes. Then, using the overhanging parchment, remove the bread to a cooling rack to cool completely before slicing and serving.