In the mood for a cheeseburger?  Try this Cheeseburger Casserole. It really does taste like a cheeseburger but it's lighter.  And you can have the leftovers!  If you buy a cheeseburger you wouldn't think of having leftovers, would you?  But the leftovers from this cheeseburger casserole are just as good or maybe even better the next day.