Bottom of food burning

I am sure this has happened to everyone. The bottom of cakes, muffins or pizza being burned. A lady at our TM dealer told me if you take a cermaic tile the 12inch one works the best. put it in the lower shelf of the oven. The one with the holes, and it will distribute the heat better and cook things more evenly! Maybe this is old news to some of you but I was thrilled at how well it worked! Just make sure if you are cooking pizza or something that could drip not to let it drip on the tile cause it will break. When we travel i just (I know another thing to remember) wrap it in a dish towel or oven mits to keep it from bouncing around so much.

Audra K