By Robin from Washington, IA
Add beef, egg, onion and soup, milk and cheese to macaroni. Bake at 350 degrees F until bubbly.
Mix all together and put into a 2 qt. casserole. Put in refrigerator overnight. Bake 1 hour at 350 degrees F.
Stir all ingredients together. Put in greased casserole and refrigerate overnight or at least 4 hours.