Saucy Cocktail Meatballs
["1/3 c. finely chopped onion", "1/3 c. finely chopped green pepper", "2 Tbsp. butter or margarine", "1 can Campbell's tomato soup", "2 Tbsp. brown sugar", "4 tsp. Worcestershire sauce", "1 Tbsp. prepared mustard", "1 Tbsp. vinegar"]
["In saucepan, cook pepper and onion in butter until tender. Stir in remaining ingredients.", "Pour over meatballs and serve hot. Can be kept warm in a crock-pot.", "This sauce will cover about 100 meatballs or 1 1/2 pounds of frankfurters, cut into 1-inch pieces."]
["onion", "green pepper", "butter", "Campbell's tomato soup", "brown sugar", "Worcestershire sauce", "mustard", "vinegar"]