What can I line the bottom of my oven with?
A simple sheet of aluminum foil can stop any spill from reaching the heating element of your oven and burning. There are two approaches to using foil. Line the bottom rack with a sheet of foil to catch anything dripping from above. This allows the air to flow unobstructed around the food being cooked above.
PROPER PLACEMENT FOR GAS OVENS: Place oven liner on the bottom wire rack – NOT on the floor of the oven.