Before using your Crock pot or pans to cook food, spray it first with Pam. Food will not stick and clean-up is a breeze. I do this always and it has not failed me yet. This does not affect the taste of the food and does not harm the crock pot.
Source: Started doing this on my own to see if it worked and it proved effective.
Sheesh, why didn't I think of this. I always spray baking dishes and casseroles for easier clean-up. Well I will definitely give it a try. I wish I had on Sun when I made pot roast and potatoes and carrots in the crock pot. There definitely was some stuck on food which required some soaking time. There are special type of liners you can buy now to use when crock potting but I'm too frugal to buy those.
To clean a crock pot easily, wipe the interior sides and bottom with oil or spray with Pam before filling and cooking.