It's perfectly fine to use plastic wrap in the oven as long as it is completely covered with aluminum foil AND it makes contact with water or humidity (such as steam or a water bath). I baked stuffing with this method at 350 deg. and the plastic wrap did not melt or burn. A professional chef is my source for this new technique. I'm looking forward to trying it on the underside of my water-bath-cheesecake this week.