Either preheat your oven to 250F, or prepare your slow cooker, depending upon which cooking method you choose. Both will take the allotted four hours of cooking time.
Fry up your bacon, allow to cool slightly, then chop it up.
While your bacon is frying, finely dice your onions.
When those two things are ready, combine all ingredients in a deep casserole dish or your slow cooker, again depending on the cooking method you've chosen.
Bake (slow cook) for four hours (on low, if slow cooking).
Serve & enjoy! These get better and better with age. I've been known to use leftovers as chip dip a couple days later. Don't judge me until you try it!