1. These instructions are for 1/2 rack of ribs. Follow the same instructions at the same time for as many ribs as you are making. If you are doing more than 1/2 rack of ribs, each 1/2 rack should be wrapped and seasoned separately. And you don't have to cut them in half if you have a big enough sheet pan and oven, that is for convenience purposes only.
2. Mix the rib rub if you have not done so already.
3. Place ribs meat-side down on a cutting board. Prick the back of the rib rack several times with a knife, or score it with the tip of a sharp knife between the bones. Don't cut too far into the meat, all we are trying to do is open the membrane to allow the rub to get in contact with the meat.
4. Turn the ribs over so the meat side is facing up. Apply approximately 1 T of dry rub to meat side of ribs to generously coat them and rub it into the meat with your hands.
5. Place a sheet of aluminum foil that is big enough to easily wrap the half rack of ribs on a sheet pan. Place the coated rib rack meat side down on the foil sheet.
6. Apply 1 T dry rub to bone side of the rib rack.
7. With rib rack still meat-side down, fold foil around it to create a tight seal. This is best done by bringing the lengthwise sides of the foil up over the meat and fold them together tightly. The bring the ends up over the meat and make sure they are sealed.
8. Place the sheet pan in the refrigerator for at least 2 hours and not more than 24 hours.
9. 3 1/2 hours before you want to serve the ribs, take the sheet pan out of the refrigerator and place it in a cold oven. Turn the heat to 250° F and set the timer for 2 hours.
10. After the two hours, remove the sheet pan allow the ribs to sit untouched for 20 minutes.
11. Increase oven temperature to 350° F.
12. Being very careful for escaping steam, open foil and drain off the accumulated liquids.
13. Brush barbecue sauce on the bone side of the rib rack.
14. Turn the rack over over so the meat side is up. Brush barbecue sauce on the meat side of the ribs. Place the sheet pan with the foil open all the way and folded back from the ribs into the 350° F oven. Bake for 10 minutes.
15. Remove from the oven, brush barbecue sauce on meat-side only, return it to the oven and bake 10 more minutes.
16. Return to the oven for another 10 minutes.
17. Remove from the oven, brush with barbecue sauce again and return to the oven for 15 more minutes this time. If you like it a little crustier you can leave it for an extra 5 minutes.
18. Remove the ribs from the oven and admire your handiwork. But don't eat them just yet. We want them to rest for about 10-15 minutes. So tent them loosely with foil and get all your sides ready to go.