Remove the skirt from the boney side of the ribs. You can cook it with the ribs or cook it separately.
Slide a knife under the membrane that's attached to the bones and then pull it off with your hands. Rinse the ribs and pat dry well with paper towels.
Combine the dry rub ingredients in a small bowl and generously rub it onto both sides of the ribs. Use your fingers to really massage it into the meat.
Preheat your oven to 275°F. Line a baking sheet with parchment paper or aluminum foil and place the ribs on the pan with the meaty side up. Cover the pan tightly with aluminum foil.
Bake in the preheated oven for 1 and ½ hours. Take the ribs out of the oven, drain the pan juices, and brush both sides with barbecue sauce. Add them back to the oven (covered) and continue baking for 1 more hour.
Take the ribs out of the oven, brush with more barbecue sauce, and broil on high for 2-3 minutes per side.