1Place ribs in 3 1/2- to 4-quart slow cooker. Cover with onion slices. Mix remaining ingredients except cilantro; pour over ribs and onion.
2Cover and cook on low heat setting 8 to 10 hours or until ribs are tender.
3Remove ribs to serving platter; keep warm. Skim fat from surface of juices in cooker. Serve ribs with sauce; sprinkle with cilantro.