I tried one that I found on the disboards. It was layering frozen ravioli, spaghetti sauce and mozzerella cheese. Cook (I think) on low for 3-5 hours. It wasn't bad and I would do it again. My only warning is that it was starting to get dried out. I did it for 4-5 hours. I also partially thawed my ravioli since I've always heard you could crack your pot if you put something frozen in it. I would probably only cook it for 2.5 - 3 hours.