Steps
1. Preheat your oven to 350°F (175°C) and grease a small baking dish or line it with parchment paper.
2. In a blender or food processor, combine the black beans, banana, cocoa powder, almond butter, honey, vanilla extract, baking powder, and salt. Blend until smooth and creamy.
3. Pour the batter into the prepared baking dish and spread it evenly.
4. If desired, sprinkle chocolate chips or nuts on top.
5. Bake in the preheated oven for about 20-25 minutes or until a toothpick inserted in the center comes out clean.
6. Let it cool for a few minutes before cutting into squares and serving.