8 c. cooked macaroni (2 3/4 c. uncooked)
3 tbsp. flour
1 1/4 tsp. dry mustard
1 cube butter (I sometimes omit)
2 tsp. salt
3 c. milk
1 sm. jar Cheez Whiz
1/2-1 c. potato chip crumbs

Mix milk, flour, salt and mustard. Heat until slightly thickened. Add cheese and then macaroni. Stir, put in large greased baking pan. Sprinkle top with potato chip crumbs. Bake at 350 degrees for 30-40 minutes. Serves 10-12.