Susan'S Macaroni And Cheese
["2 c. elbow macaroni", "1 small onion, minced", "margarine or butter", "1 Tbsp. all-purpose flour", "3/4 tsp. salt", "1/4 tsp. dry mustard", "1/8 tsp. ground white pepper", "2 c. milk", "1/2 lb. pasteurized process cheese food, shredded", "3/4 c. fresh bread crumbs"]
["Prepare macaroni as label directs."]
["elbow macaroni", "onion", "margarine", "flour", "salt", "dry mustard", "ground white pepper", "milk", "cheese food", "bread crumbs"]