This recipe is for a rich chocolate banana cake made with soy milk and bananas, without using eggs or butter. Ripe bananas are mashed and mixed into the batter, and then a whole banana is hidden inside the batter before baking. The batter is generously filled with cocoa powder and dark chocolate, resulting in a less sweet, more bitter, adult flavor. With a simple mixing and baking process, you'll have a moist texture, a natural banana sweetness, and a rich chocolate flavor that harmonizes perfectly, creating a rich pound cake that's almost like a brownie. It's perfect for a home café or a snack.