Preheat the oven to 350 F if baking instead of frying. Drain and rinse the beans very well. Combine everything in a food processor until evenly blended – stop while it still has some texture but no large pieces remain. Roll into balls (small meatballs cook much more evenly), and either pan fry in a little oil, or place on a parchment-lined baking tray and cook on the center rack for 10 minutes, then turn each ball and bake an additional 10 minutes or until desired texture is reached.