Crimp 2 pieces of foil length-wise to make a long wide piece of foil that will be large enough to completely cover the ribs. Lay the ribs on the foil over a baking sheet.
Sprinkle on the dry rub and pat it down to work it into the meaty side of the ribs.
Crimp the foil length-wise and then fold up the ends. You will have have the ribs in a foil sleeve for resting in the rub and then baking. Rest them in the refrigerator for 1 hour.
Preheat oven to 300'F.
Remove from the refrigerator and allow to come to room temperature for about 15-20 minutes before baking.
Bake the ribs in the foil sleeve for 1 hour on a baking tray in case of leaking.
At the end of 1 hour, remove ribs from the oven.
Preheat grill to 400'F.
Grill ribs 4-5 minutes on all sides while brushing with sauce.
Transfer to a platter. Cover them with aluminum foil and allow them to rest for about 5 minutes.
Cut them into individual pieces to serve.
Sprinkle with green onions and sesame seeds.