The perfect combination of spices and seasonings for ribs contains brown sugar, paprika, salt, pepper, garlic powder, onion powder, ground mustard, celery salt and cayenne pepper. Omit the cayenne pepper for a less spicy rub.
I highly recommend broiling the ribs just before serving. Transfer the ribs directly from the Instant Pot to a baking sheet. Brush both sides generously with your favorite bbq sauce and broil for 3 minutes.