Oven Barbecued Chicken
["1 (2 to 3 lb.) chicken, cut up", "1 c. ketchup", "1/4 c. brown sugar", "1 tsp. vinegar", "1 Tbsp. prepared mustard", "1 tsp. Worcestershire sauce", "1 small to medium onion, chopped", "salt and pepper to taste"]
["Arrange chicken in a single layer in a shallow baking pan. Add the sauce mixture.", "Cover and bake 1 hour at 325\u00b0.", "Uncover and bake 45 minutes.", "Baste occasionally."]
["chicken", "ketchup", "brown sugar", "vinegar", "mustard", "Worcestershire sauce", "onion", "salt"]