Place the ribs, meat side up on top of the parchment. Coat the top, bottom and sides of the ribs with spice rub. (You will have spice rub left over. Store any leftover spice rub in the pantry in a mason jar or another airtight container.))
Fold the parchment over the ribs, sealing along the center and at both ends. Then fold the foil over the parchment-encased ribs.
Cook ribs for 1 hour to 1½ hours in the oven on the middle or lower rack. Cook until a knife pierces the meat easily with no resistance.
You will have extra spice rub left when making this recipe. Store any unused, uncontaminated rub in a mason jar or airtight container in the pantry.