If your bananas have not already been frozen and sliced, slice them, put the slices on a cutting board, and freeze for at least one hour.
If your bananas have been frozen for more than a day, take them out of the freezer and defrost for 5-10 minutes before proceeding.
Place frozen banana slices in food processor, approximately one and a half banana's worth per person. Do not make more than you plan to serve immediately.
Add one tablespoon of ground chocolate per person.
Use the pulse setting of the food processor to blend the bananas. Knock down the bits that climb out of the range of the blades. Continue pulsing food processor until chocolate banana ice cream is smooth.
Optional: Add choice of fruit chunks and give a quick pulse of the food processor to add to ice cream.
Serve immediately. Leftovers do not freeze well.