Set grill/smoker up to 250 degrees
Place ribs on sheet and remove membrane
Rub mustard on each side of ribs and add dry rub of your choice to both sides of ribs
Place rack of ribs on grill and let cook until they reach a internal temperature of 165 degrees
Place foil sheet on counter then add the butter and brown sugar then place ribs meat side down then wrap them up
Place back on grill and let cook until they reach internal temperature of 200 degrees
Take ribs back off grill and unwrap them
Lather both sides of the ribs with your favorite barbecue sauce
Place back on grill for about 15 minutes or until barbecue sauces glazes
Enjoy!