Preheat your pellet smoker to 225°F.

Remove the membrane from the back of the ribs by lifting a corner with a knife and pulling it off with a paper towel.

Rub the ribs all over with the yellow mustard.

Sprinkle the BBQ rub generously over both sides of the ribs, patting it in with your fingers.

Place the ribs on the pellet smoker, bone-side down.

Smoke the ribs for 3 hours.

In a small mixing bowl, whisk together the BBQ sauce, apple cider vinegar, and honey.

After 3 hours, remove the ribs from the pellet smoker and wrap each rack tightly in aluminum foil.

Pour half of the BBQ sauce mixture over each wrapped rack of ribs.

Return the ribs to the pellet smoker, bone-side down, and continue smoking for an additional 2 hours.

After 2 hours, remove the ribs from the pellet smoker and unwrap them from the foil.

Brush the remaining BBQ sauce mixture onto both sides of the ribs.

Return the ribs to the pellet smoker, bone-side down, and continue smoking for an additional 30 minutes.

Remove the ribs from the pellet smoker and let them rest for 10-15 minutes.

Cut the ribs into individual portions and serve hot.