Set a platter of these out at a party, and stand back.
6 cups of cooked beans equals about 3 x 14 oz / 400g tins of cooked beans, drained. You can use kidney, Romano, pinto, black-eyed peas, etc. You can use all one type of bean, or mix them. For cheese, you can use cheddar or Monterey jack. For chiles, use whatever chiles strike your fancy. If you can't get fresh chiles, try using a bit of chili powder and some chopped green pepper or celery. The cocoa might seem like an odd addition, but Mexicans use chocolate in making savoury dishes.