Barbecued Fish Fillets
["1 lb. fish fillets", "5 Tbsp. butter or margarine", "salt and pepper to taste", "1/2 c. diced onion", "2 tsp. sugar", "2 tsp. prepared mustard", "1/2 c. ketchup", "2 tsp. Worcestershire sauce", "1/3 c. lemon juice"]
["In 2 tablespoons of butter, saute onions, then remove.", "Add remaining butter and brown the fish fillets.", "Spread onions over fish and season with salt and pepper.", "Combine 1/4 cup water with remaining ingredients.", "Pour over fish and simmer about 20 minutes. Serves 4."]
["fish fillets", "butter", "salt", "onion", "sugar", "mustard", "ketchup", "Worcestershire sauce", "lemon juice"]