Okay, the second time I used this puppy it warped in the oven and I almost sent it back, but keep reading! I got mad and pulled it out of the oven and went "What the heck?" It went right back into completely level shape. Somehow, I guess the 1st oven usage past 400 "primed" it somehow. I use this mostly for cookies and biscuits (at 350 and 425) and never have an issue. It's extremely non stick and always cleans up nicely. I did a lot of research before I got a new cookie sheet because I was tired of buying a new one every 6-8 months and this is the best one I found. I'm extremely pleased.
Rating:
[5 of 5 Stars!]