Crockpot Scalloped Potatoes and Ham

ham (2 ham steaks or other kind of ham)
8-10 medium potatoes, peeled and thinly sliced
2 onions, diced
2 c grated cheddar cheese
1 can cream of mushroom soup

Layer potatoes, onion and ham in crockpot, making two layers of each.
Top with cream of mushroom soup.
Cook on low 8 hours.
Add cheddar cheese at the end and let melt.