Quick Barbecue Sauce
["1/3 c. chopped onion", "3 Tbsp. butter or oleo", "1 c. ketchup", "1/3 c. vinegar or lemon juice", "2 Tbsp. brown sugar", "1/2 c. water", "2 tsp. prepared mustard", "1 Tbsp. Worcestershire sauce", "salt to taste", "1/8 tsp. pepper"]
["Slowly cook onion in butter in a saucepan until onion is tender.", "Add remaining ingredients, cover and simmer about 15 minutes."]
["onion", "butter", "ketchup", "vinegar", "brown sugar", "water", "mustard", "Worcestershire sauce", "salt", "pepper"]