when we have the concession stand at our wrestling tournaments we use turkey bags inside our crockpots (for chili or cheese or hotdogs etc) and then at the end of the day, just pull out the turkey bag and toss.....way easy cleanup!!! You might try those. They come in different sizes so you'd need to estimate what size you'd need for the size of crockpot you have (we used the 15 lb size bags usually.