Place the pork in a foil pan. Add more dry rub and top the pork with butter.Add a splash of Dr. Pepper to the pan. Cover & smoke for another 2-3 hours.
1. Coat the pork with mustard & dry rub. Sear until golden-brown.2. Sauté the onions. Add the onions, pork, & Dr. Pepper to a slow cooker.3. Cook on LOW for 6-8 hours. Shred.
It's important to cook the pork low-and-slow to break down the tough tissues of the pork butt.The pork needs to come to 205°F to be fall-off-the-bone tender!