Using Aluminum Foil

Aluminum foil can be used on/around the food being cooked, and on/around the bake pan. However, be aware that using aluminum foil changes the heating characteristics of the oven and may lead to unpredictable results. Never use aluminum foil on the crumb tray, the floor, the walls, or along the entire rack. Doing so will cause overheating and improperly manipulates heat reflection, leading to poor results.