Macaroni And Cheese
["1 1/2 c. uncooked elbow macaroni (about 6 oz.)", "1/4 c. margarine or butter", "1 small onion (about 1/4 c., optional)", "1/2 tsp. salt", "1/4 tsp. pepper", "1/4 c. flour", "1 3/4 c. milk", "8 oz. Velveeta cheese, cut into 1/2-inch cubes"]
["Cook and drain pasta according to package directions.", "Cook and stir margarine, onion, salt and pepper over medium heat until onion is slightly tender.", "(If not using onion, cook until butter is melted completely and stopped bubbling.)", "Blend in flour.", "Cook over low heat, stirring constantly until mixture is smooth and bubbly; remove from heat.", "Stir in milk.", "Heat to boiling, stirring constantly.", "Boil and stir 1 minute; remove from heat. Stir in cheese until melted."]
["elbow macaroni", "margarine", "onion", "salt", "pepper", "flour", "milk", "Velveeta cheese"]