It wasn’t a particularly high temperature or for a very long time so i’m pretty sure it’s not supposed to do that tried baking in oven 350fprior to use twice and both times produced black smoke that set off my smoke alarm andy family had to clear out of the home as the fumes escaped

Love it want more’n i use it to make eggs and is perfect nothing sticks great product i was storing this tray under my stove with my other trays and one day while i was preheating the oven it caught fire while still in the drawer