1. Slice onion and separate into rings.
2. Cover bottom of baking dish (9x12) with onion rings, peel and slice potato thin, place on top of rings, sprinkle on salt and pepper, brown ground beef, drain and put on top potatoes.
3. Top with pork and beans.
4. Spread undiluted soup on top of that, place bacon on top.
5. Bake at 350°F for 60 minutes then place cheese on top to melt.