Preheat your oven to 350° and prepare a muffin tin with muffin papers. This recipe should make 10-12 muffins.

Mash the bananas with a fork in a medium bowl, then transfer the mashed banana to a large mixing bowl.

To the mixing bowl, add both eggs and the box of chocolate cake mix. Stir all the ingredients together until a smooth batter forms.

Scoop the batter out equally into your muffin papers, scraping the sides of the bowl down with a rubber spatula to make sure you get all the batter. Sprinkle each muffin top with a few chocolate chips, if desired.

Bake for about 30 minutes, or until a toothpick inserted in the middle of a muffin comes out clean.

Allow the muffins to cool completely on a wire cooling, then store them in an airtight container for up to a few days.