if you use nonstick aluminum foil to cover a baked casserole or lasagna while it is baking, when the dish is cooked and you take off the foil, the cheese won't stick to it
I use the non stick foil to cover about everything when it needs to be covered while baking. Great stuff. I tried oiling regular foil but it isn't the same. Trying to be frugal I wasted oil, foil, and a lot of cheese that stuck. LOL