Preheat your oven to 350°F (175°C). This ensures your bread bakes evenly and rises beautifully.
In a mixing bowl, mash the ripe bananas until smooth. This will serve as the base for your batter.
In a blender or food processor, combine the mashed bananas, black beans, eggs, cocoa powder, coconut sugar, vinegar or lemon juice, baking powder, baking soda, and sea salt. Blend until the mixture is completely smooth and well combined.
If you’re using chocolate chips, fold them into the blended batter with a spatula. This adds a delightful melty surprise in each slice.
Pour the batter into a greased loaf pan, spreading it evenly.
Place the loaf pan in the preheated oven and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
Once baked, remove from the oven and let it cool in the pan for about 10 minutes. Then, transfer it to a wire rack to cool completely before slicing.