Potatoes with cheese on top were an all-time favorite at my house. I'm not sure how well leftovers keep, because I don't remember ever having any! We all fought over who got the last spoonful!
What you will need:
Butter or margarine
First off, make up a batch of potatoes big enough for the group you're feeding. Homemade or instant, either one, it's up to you. If you've got some leftover mashed potatoes, those will work out fine, as well. This recipe comes in handy when you are trying to figure out what to do with your leftover potatoes after Thanksgiving!
Locate a casserole or baking dish large enough for the potatoes to cover the bottom and be about 1 1/2 to 2 inches thick.
Bake uncovered in a 350 degree oven until cheese is melted and bubbly. Serve immediately.