*You can use any of your favorite varieties of melting cheese. I sometimes use fontina, pepper jack or a mozzarella. I typically like to use at least a little cheddar though! *To prep this in advance, follow the directions up until the oven step. Then let the skillet cool and store in the fridge until ready to bake. When ready to bake, remove the skillet from the fridge while you preheat the oven. Bake as directed.