Tear off 4 pieces of aluminum foil large enough t o enclose each portion of the ribs. Spray each piece of foil with cooking spray. Season ribs liberally with dry spices. Brush ribs liberally with BBQ sauce and place in foil, wrapping tightly. Place in refrigerator overnight.
Preheat oven to 300*F. Bake ribs in tightly wrapped foi for 2.5 hours. Remove from foil and basre with more BBQ sauce if desired.