Do you have a recipe that just for some reason tends to stick to your crockpot? Simply take your nonstick cooking spray, and give a light quick spray to the inside of your crockpot. This will help prevent any food or sauces from sticking and burning to the edges of your crockpot.
As an alternative, you can also use a slow cooker liner bag or make your own with a roasting bag. Fortunately, the costs of slow cooker liners are much cheaper than they were when they were originally launched.
Slow cooker liner bags fit 3-8 quart-sized slow cookers (the standard sized slow cookers) and are safe for the high temperatures of slow cookers. Do not use anything like produce bags or plastic wrap, as they will melt with the heat.