Pat dry the rack of ribs with a paper towel and rub on your dry ingredients on both sides.
In the Instant Pot, combine apple juice, vinegar, liquid smoke and ⅓ cup of bbq sauce.
Coil the rack of ribs inside the with the bone-side facing the center. Ribs should all be partially submerged. Cook on high pressure for 25 min followed by a 10 min natural pressure release before manually releasing remaining pressure.
Using two sets of tongs, carefully transfer ribs to a rimmed baking sheet lined with a wire rack with the meat side up. Brush the top and sides with the remaining ⅓ cup BBQ sauce.
Broil in the center of the oven on high for 4-5 min. Remove from the oven and let rest for 5-10 min before serving. Serve with more BBQ sauce if desired.
