I tried this recently. It was very good.
Mix 2 cups of mozzarella cheese
1 cup of cheddar cheese
3 eggs
Combine all together. I used parchment paper, otherwise use non stick spray on your pan. spread it thinly across your pan. I used a cookie sheet, it wasn't enough to cover it all but by the time it cooked up, it almost all reached the edges.
Cook at 450 degrees for 10 minutes. Watch for it to be melty gooey and a little crisp on the edges. Let cool. I put mine in the fridge for 5 minutes and then it peeled right off the parchment paper and I carried it around, so proud that it worked! Then I put it back on the parchment paper (mistake), added my sauce and toppings and put in broiler for about 5 minutes. (I pre-cooked my toppings).Note: Parchment paper says not to exceed 425 degrees for a reason.. Luckily mine didn't catch on fire but it was "toasted". Take out and cool for a second. I cut mine into 2" squares and served. Everyone, kids included, loved it! A definite keeper and it was so fast and easy!
(From:
http://terrastips.blogspot.com)