Savory Cocktail Meatballs
["1 lb. ground beef", "2 Tbsp. bread crumbs", "1 egg, slightly beaten", "1/2 tsp. salt", "1/3 c. finely chopped green pepper", "1/3 c. finely chopped onions", "2 Tbsp. butter or margarine", "1 can tomato soup", "2 Tbsp. brown sugar", "4 tsp. Worcestershire sauce", "1 Tbsp. mustard", "1 Tbsp. vinegar"]
["Mix beef crumbs, egg and salt.", "Shape into 50 meatballs. Place in shallow baking pan; broil until brown, turning once. Spoon off fat.", "In saucepan, cook pepper and onions in butter until tender.", "Stir in remaining ingredients.", "Pour over meatballs.", "Cover.", "Bake at 350\u00b0 for 20 minutes."]
["ground beef", "bread crumbs", "egg", "salt", "green pepper", "onions", "butter", "tomato soup", "brown sugar", "Worcestershire sauce", "mustard", "vinegar"]