Set your Ribs out of Refrigerator one hour before cooking so they can get room temperature.
Set oven at 300 degrees and put Ribs (Boney side down) on a shallow pan sprayed with non-stick spray. Cover loosely with aluminum foil.
Cook for 2 and 1/2 hours. After removing from the oven let them rest about 10 minutes and they are ready for the grill.
While the Ribs are resting heat grill to 350 to 400 degrees. Place your Ribs on the grill and baste the top with your BBQ sauce. cook 6 minutes and turn over basting the new top side Cook 6 minutes more. Repeat this for 2 times on each side. This is a total of 24 minutes on the grill and you are ready to serve them. Yummy!