You need three things, meat, cream of soup and Lipton soup.
Any sliced beef or pork steaks will work. Round, chuck, and arm beef steaks all work well.
Mix one can of cream of something soup, mushroom, onion or celery all work, with one packet of Lipton onion or onion-mushroom soup. Smear the soup mix over the steaks as you put them in the crock. The soup will make a really good gravy. I make either instant mashed or a package of the steamer mashed and a green veggie to go along with it.