I have an old cookie sheet and I want to know if I were to put tin foil down over it since it has been abused and put some non stick cooking spray if this would work to cook cookies on.
Aluminum foil should work if the pans are just a little beat upIf they are heavily blackened, though, they may get too hot and burn the bottoms of the cookies, even with aluminum foilIn that case, use an extra layer or twoI prefer the non-stick aluminum foil for cookies, but cooking spray will definitely help.
