Preheat oven to 400° and line a mini muffin tin with 23 liners. Set aside.
Combine banana, maple syrup, SunButter, egg, vanilla, baking soda, and cacao powder in a blender or food processor and blend until smooth. This should take less than a minute.
Scoop into the muffin liners and top with the chocolate chips. Bake for 7 minutes.
Notes
*If you don't need them nut free then use any nut butter. *To make regular size muffins, bake at 375° for 14 minutes. Will make 7.