01 -
Preheat oven to 350°F (175°C). Lightly grease a 9x9 inch baking pan or line it with parchment paper.
02 -
In a large mixing bowl, use a fork to mash the ripe bananas until smooth.
03 -
Add granulated sugar, brown sugar, and melted butter to the mashed bananas. Mix thoroughly until well combined.
04 -
Beat in the eggs and vanilla extract until the mixture is fully incorporated and smooth.
05 -
In a separate bowl, whisk together the all-purpose flour, unsweetened cocoa powder, baking soda, and salt.
06 -
Gradually fold the dry mixture into the banana mixture, stirring just until combined. If using, gently fold in the chocolate chips.
07 -
Pour batter evenly into the prepared pan. Bake for 30-45 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
08 -
Allow to cool in the pan before slicing. Serve at room temperature.