This one layer Chocolate banana cake is the perfect dessert to make when you have leftover bananas but don't want to make banana bread. It's rich, fluffy, and has double the chocolate flavor from chocolate chips that are added to the batter. This recipe uses 3 bananas and is easily made in a 9" cake or loaf pan.
Preheat your oven to 350 degrees F and spray a 9" round cake pan or loaf pan with baking spray and/or line with parchment paper.
In a medium size mixing bowl, or the bowl of a stand mixer, mash the 3 bananas with a fork. Lumps are ok. (To make this a one bowl cake make it in a large bowl, or mash the bananas in a smaller bowl and continue with a larger one.)
Add the 1/2 cup softened butter, 1/2 cup brown sugar, 1/2 cup white sugar and whisk until a smooth paste forms. Alternatively you can use the paddle attachment in your stand mixer on low-medium speed for 1 minute.
Add the eggs one at a time, stirring to combine in between. Add 1 tsp vanilla extract and mix.
Add in the 1 cup flour, 1/2 cup cocoa powder, 1 tsp baking soda, and 1/2 tsp kosher salt. Don't mix yet! Add the chocolate chips on top of the flour and lightly dust them with the flour. This helps them not sink to the bottom of the cake. Mix until just combined.
Pour batter into the prepared cake or loaf pan and bake 40-45 mins or until the middle no longer jiggles. If you insert a skewer and it comes out with a couple moist crumbs, it's done!