Instructions

• Preheat the oven to 275°F.
• Line two baking sheets or roasting pans with foil.
• Remove the membrane from the back of the ribs if it remains.
• Mix liquid smoke and Dijon mustard, then coat both sides of the ribs.
• Mix the dry spices and seasonings.
• Rub the dry mixture over all sides of the ribs.
• Seal each slab in its own foil packet and place on the lined tray.
• Bake packets for 3 hours, then unwrap and continue baking until tender, about 30 minutes more.
• Brush with barbecue sauce during the unwrapped bake if desired.
• Rest up to 20 minutes, cut into single-bone portions, and serve.