Cut ribs into serving size pieces.
Place ribs in shallow pan.
Bake, uncovered, at 325° for 1 1/2 hours.
Drain off pan drippings, and discard.
Saute onion and garlic in butter in a saucepan.
Add remaining ingredients; bring to a boil.
Pour over ribs; continue baking 45 minutes or until tender, basting occasionally