Preheat the oven to 350 F and line 8-9 muffin cups.
Drain the beans and rinse extremely well, then pat dry. This is important because it gets rid of any bean taste.
In a food processor, blend all ingredients (except chocolate chips) until smooth. Stir in chocolate chips.
Pour the mix into the muffin cups – don’t overfill or else they will rise and then sink in the center.
Bake for 20 minutes. They will look underdone – let sit 20 minutes and they will firm up.
Muffins last for 3-4 days refrigerated or 2-3 weeks frozen.