Here's a classic mac & cheese recipe given to me by my (would-have-been) mother-in-law many years ago. It has become a family favorite, and I get asked to make it nearly every Thanksgiving and Christmas. It makes enough to feed a small army! It's best to use block cheese and grate it yourself, to get the best cheese flavor. Leftovers can be easily cut into squares, wrapped with wax paper and frozen. Then just take one out and nuke it for a great side to go with a sandwich.