Crockpot Ham and Scalloped Potatoes

6 to 8 slices of ham
8 to 10 med. potatoes, peeled and thinly sliced
2 onions, peeled and thinly sliced
1 c. grated Cheddar or American cheese
1 can cream of celery or mushroom soup

Put half of ham, potatoes and onions in crockpot. Sprinkle with salt and pepper, then grated cheese. Repeat with remaining half. Spoon undiluted soup over top. Cover and cook on low 8 to 10 hours in crockpot or high 4 hours. Variations: sausage instead of ham and omit the cheese. Serves 6-8.

Notes: I have left the potatoes unpeeled, used red onions instead of regular onions, added green or red bell peppers, and used a different kind of cheese and it has still turned out well. I found this recipe online somewhere a long time ago, but I don't remember where.