Prep Dry Rub: In a small bowl, add 2 ½ tablespoons smoked paprika, 2 ½ tablespoons lemon pepper, 1 ½ tablespoons kosher salt, 1 tablespoon smoked garlic powder, ½ tablespoon onion powder, ½ tablespoon ground black pepper, and ½ teaspoon cayenne pepper. Mix to combine and set aside.
Prep Ribs: Cut 2 full racks of baby back ribs in half and if the ribs have a membrane, pull to remove it. Place ribs on a baking sheet. Pour a little liquid smoke, one half section of ribs at a time, and rub all over to thinly coat. Repeat with 1-2 tablespoons worcestershire sauce and ½ cup yellow mustard (use enough to leave a good coating on the ribs using more than listed, if necessary). Take the dry rub and rub all over each section.
Instant Pot: Add 2 cans Olipop Dr. Goodwin (or Dr. Pepper) to the Instant Pot. Place the trivet inside. Set ribs on top of the trivet so the ribs are vertical.
Cook Ribs: Secure the lid to the Instant Pot on top. Cook on High Pressure for 24 minutes (add 2-3 minutes if the ribs are bigger than normal). Let Instant Pot naturally release for 5 minutes and then manually release according to the manufacturer's instructions.
Barbecue Sauce + Finish: Once ribs come out of the Instant Pot, place them on a cookie sheet (meat side up), brush with your favorite BBQ sauce and then broil on high for 4-5 minutes - or until sauce has started to just barely caramelize (watch carefully as oven temps will vary).
Serve: Enjoy right away!
Notes
Spare Ribs: You can actually use spare ribs, if you want; they aren't as good (in my opinion), but they definitely still work. Spare ribs tend to be bigger than baby back ribs, so I would suggest increasing the cook time by 3 minutes.
Finish on Grill: Preheat your outdoor grill to 300 degrees F. While that heats remove ribs from Instant Pot and place on a sheet pan, meat side up. Brush with your favorite BBQ sauce to coat. Place on hot grill grates for 3 minutes per side or under your oven broiler (set to High) for 2-3 minutes per side.
Frozen: You can cook ribs from frozen, just ensure they are fully prepped beforehand (rub with liquid smoke, mustard, and dry rub + cut into half racks) and then cook for an additional 10 minutes in the pressure cooker.
Don't want to use Dr. Pepper/Olipop? Simply replace with 1 cup chicken broth and 1/2 cup apple cider vinegar.