I don't buy these to bake cookies or any pastry or breads. I buy them to oven cook frozen food such as fish, potato fries, etc. If necessary, I spray the pan with oil, put in butter, or some non stick ingredient. The one thing I do not like is the size of the pans. They are too big for most of my uses. Also, regardless of what the manufacturer says I would like to put them in the dishwasher. However, they are too big. I have quarter size sheets and they come out fine.
Rating: [5 of 5 Stars!]