Put the chips, toast, garlic, sour cream, and milk in food processor and blend to a smooth paste. Add more milk if you need to loosen it up a little.
Mix in the meats and cheese and mix well. Form meatballs. Broil for 7 minutes a side until browned nice and cooked through.
Saute the onion until soft, add the garlic cook 1 minute. Add the chipotle and cook another minute. Add the cumin and stir, then add everything else. Simmer for 30 minutes. Add the broiled meatballs and simmer another half hour.
Put the meatballs and some sauce on a nice sandwich roll and top with cheddar. Broil to crisp the bread and melt the cheese. Tuck some sliced avocado and cilantro into the sandwich and dig in!