If you're a chocolate lover, this banana cake recipe is perfect for you. Made with cocoa powder, ripe bananas, flour, sugar, eggs, and baking powder, this cake is rich and decadent. Using a food processor, blend the bananas until smooth, add the rest of the ingredients, and mix until well combined. Pour the batter into a greased cake pan and bake for 35-40 minutes. Let the cake cool before serving. You can also add some chocolate chips to the batter for extra chocolatey goodness.