Preheat the oven to 350ºF and lightly grease a 9-by-5-inch loaf pan. Press a piece of parchment paper into the bottom of the pan to ensure easy removal later.
In a large bowl, add the peeled ripe bananas. Mash them with a fork until relatively smooth. Then add the almond flour, eggs, protein powder, maple syrup, baking powder, cinnamon, vanilla, and salt. Stir well.
Pour the batter into the prepared pan and smooth the top with a spatula. Sprinkle the mini chocolate chips on top, if you like. Bake at 350ºF for 55 minutes, or until the center feels firm to the touch and a toothpick inserted in the center of the loaf comes out clean. The edges should be golden brown and the top may crack.
Let the loaf cool for at least 30 minutes, then transfer to a wire rack to cool completely. Cut the loaf into 1-inch slices and enjoy! Leftovers can be stored in an airtight container in the fridge for up to 5 days. Or freeze the slices between parchment paper in a freezer bag for up to 3 months.
Notes
Nutrition information is for a 1-inch thick slice of banana bread without the optional topping. This information assumes you get 9 slices from the 9-inch pan. Nutrition information is automatically calculated using generic ingredients, so it's just an estimate and not a guarantee.Banana Note: Bananas can vary in size, so the amount of puree you get may vary each time. This recipe assumes you'll get 1.25 to 1.5 cups of mashed banana from 3 ripe ones. Almond Flour Note: If you're running low on almond flour or want slightly less calories per slice, you can use 1.5 cups of almond flour in this recipe. This will lower the protein to 11 grams per slice.Sweetener Note: If you like, you could swap honey for maple syrup. Honey is slightly sweeter and has a stronger flavor; it might be more noticeable in the bread. If your protein powder is sweetened, you may be able to skip the added sweetener, but I haven't tested that yet.