Cheeseburger-Vegetable Casserole
["1 lb. ground beef", "1/2 c. chopped onion", "1/4 c. margarine", "1/4 c. all-purpose flour", "1 tsp. salt", "dash of pepper", "1/2 c. milk", "6 oz. shredded sharp American cheese", "1 tsp. Worcestershire", "1 (10 oz.) pkg. frozen vegetables", "1/4 c. chopped pimento", "4 serving instant mashed potatoes"]
["Brown ground beef and drain.", "Add all other ingredients, but hold back 1/2 cup cheese for topping.", "Bake at 350\u00b0 for 25 to 30 minutes."]
["ground beef", "onion", "margarine", "all-purpose", "salt", "pepper", "milk", "shredded sharp American cheese", "Worcestershire", "frozen vegetables", "pimento", "potatoes"]