Remove the membrane from the back of the ribs, then cut the rack into 2 bone portions. Toss the ribs in mustard coating all sides, then season liberally with your favorite dry rub.
Place ribs on a cold pellet grill in the center of the grill, away from the edges if possible. Turn the grill up to 400 degrees F. and shut the lid. Cook for 90 minutes.
After 90 minutes move the ribs to a bowl and toss with bbq sauce coating then on all sides then transfer to a foil half pan and cook at 350 degrees F for 30 minutes to let the sauce carmelize.
Ribs should be tender and juicy but not fall off the bone. You should be able to pull the two bones apart easily.
Notes
You can use baby back or pork spare ribs for this party rib recipe but it will not work for beef ribs.Leftover ribs can be reheated in the oven or air fryer at 325 for 8-10 minutes until warm.The 0-400 method is also great for chicken wings so you can make both ribs and chicken wings at the same time. the wings will finish sooner so just keep them warm in a foil pan or serve as an appetizer.