Preheat your oven to 350°F (175°C) and prepare a 9x5 inch loaf pan by greasing and flouring it.

Mash the ripe bananas in a large mixing bowl until smooth and then add the softened butter, mixing until light and fluffy.

Gradually mix in both sugars, then add the eggs one at a time, followed by the vanilla extract.

In a separate bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt.

Slowly combine the dry ingredients into the wet mixture until just combined.

Fold in the chocolate chips and nuts, ensuring an even distribution.

Pour the batter into the loaf pan and bake for 50-60 minutes, until a toothpick inserted comes out clean.

Allow to cool in the pan for about 10 minutes before transferring to a wire rack.