Directions:

Preheat your oven to 350°F (175°C) and line a small loaf pan or muffin tin with parchment paper or lightly grease it.
In a mixing bowl, mash the bananas until smooth.
Add the eggs and whisk until well combined.
Stir in the cocoa powder and baking powder (if using) until the batter is evenly mixed.
Pour the mixture into the prepared pan or muffin cups and smooth the top.
Top with banana slices or nuts if desired.
Bake for 20–25 minutes or until a toothpick inserted in the center comes out clean.
Let cool slightly before serving.