Hamburger Casserole
["1 Tbsp. vegetable oil", "1 medium onion, diced", "1 lb. lean ground beef", "1 1/2 c. cooked macaroni", "2 c. canned tomatoes with juice", "salt and pepper to taste"]
["Heat oil in skillet.", "Heat onion.", "Cook beef until brown. Drain if necessary.", "Stir in macaroni, cook until tender with juice.", "Grease casserole pan.", "Bake for 30 minutes a t 350\u00b0.", "Make 6 servings."]
["vegetable oil", "onion", "lean ground beef", "macaroni", "tomatoes", "salt"]