Preheat oven to 375 degrees.
Add cooked lentils, oil, banana, egg, sugar and vanilla to a food processor and process until smooth.
Add oats, flour, baking soda, and cinnamon and process until just mixed.
Add chocolate chips and pulse a couple of times to combine.
Scoop into greased muffin tins and bake at 375 for 18-20 minutes or until a toothpick inserted into the center comes out clean.
