Using high heat with aluminum foil in the oven bottom could cause the foil to melt, permanently damaging your appliance. On models with two rack positions: Use the lower rack clips for cooking on one level; Use the top clips for two level baking Put food or oven-safe cookware directly on the metal tray to convection bake, warm or toast. Get mircowave safe dishes. What do you think? And is there a workaround? Aluminum foil is a staple accessory in every baker’s kitchen. Do not use anything metal, pots pans etc. Sent by Rob Editor: Any convection oven users out there? Using aluminum foil as an oven liner can also cause the following issues: Using foil on oven racks can disrupt heat distribution in the … DO NOT use aluminum foil in a microwave! U shld buy a toaster oven and a hotplate or plug in single burner. Use the metal tray in the same way you would use a shallow baking pan or baking tray. What’s the deal there? You can use aluminum foil While it is safe to bake with aluminum foil, I don’t recommend putting the foil to line the bottom of your oven. Q: I have a convection oven and I want to roast garlic and potatoes (separately), but the oven instructions say they don’t recommend using foil. Microwave convection ovens can use metal and foil safely during the convection cooking.Metal (aluminum foil) can be safely used in a microwave but certain guidelines must be followed to prevent damage to the oven. Instead, put a heavy-duty aluminum foil sheet on the rack below your baked good. It will cause a fire or worse explode. The following describes the proper use: Aluminum foil is used to shield portions of a food item to prevent overcooking. You will avoid possible heat damage to your oven. If you're using an oven with a Convection mode and you are NOT using a Microwave mode at the same time, it's perfectly fine to use aluminum foil. U can use foil in an oven but not a microwave. The problem is in microwave ovens because metals will block the microwaves, and in some situations can cause arcing. Also twist ties or anything with a foil wrapping is dangerous to use.