Barbecued Spareribs
["4 lb. spareribs", "2 Tbsp. butter", "1/2 c. chopped onion", "1 c. water", "1 c. ketchup", "2 Tbsp. vinegar", "2 Tbsp. lemon juice", "2 Tbsp. Worcestershire sauce", "2 Tbsp. brown sugar", "1 tsp. dry mustard", "1 tsp. salt", "1/4 tsp. pepper"]
["You will need 2 (10-inch) skillets and a baking pan."]
["spareribs", "butter", "onion", "water", "ketchup", "vinegar", "lemon juice", "Worcestershire sauce", "brown sugar", "dry mustard", "salt", "pepper"]