Preheat your smoker to 225°F.
Remove the membrane from the back of the ribs. Slide a butter knife under the membrane, grip it with a paper towel, and pull it off.
Apply mustard binder to all sides of the ribs.
Season the ribs evenly on both sides and along the edges
Place ribs meat-side up on the smoker grates. Smoke for 3 hours.
Lay out heavy-duty foil and add butter, honey, and the remaining 1 tablespoon of rub. Place the ribs meat side down and seal tightly.
Return foil-wrapped ribs to the smoker meat-side down for 2 hours.
Unwrap the foil and fold the edges into a “boat.” Flip the ribs meat-side up and smoke uncovered for 30 minutes.
Use a basting brush to apply BBQ sauce, and optionally baste with juices from the foil. Smoke for 30 more minutes until the sauce sets. Remove from the smoker and serve.