Trim excess fat from ribs. In a large skillet, brown ribs on all sides in oil. Cover the country style ribs with sliced onion.
In a bowl combine all sauce ingredients; pour evenly over ribs and onions. Cover and cook on LOW setting for 7 to 9 hours, or on HIGH for 3 1/2 to 4 1/2 hours.
Country style ribs recipe serves 4 to 6.