Add pellets to the smoker, and preheat to 225°F. While it's heating, combine ½ cup brown sugar, paprika, pepper, garlic, minced onion, and chili powder in a small bowl, and mix well to combine.
1 cup Brown sugar, ¼ cup Black pepper, 3 Tablespoons Paprika, 2 Tablespoons Garlic, 2 Tablespoons Minced onion, 2 Tablespoons Chili powder
Set the pork butt on a cutting board, and rub down entirely with olive oil.
7 lb. Boston butt, 2 Tablespoons Olive oil
Making sure to get every side, sprinkle the whole pork with salt flakes.
2 Tablespoons Salt
Sprinkle the boston butt rub mixture on all sides of the boston butt, making sure to spread it evenly across the entire surface including crevices.
Open the preheated smoker, and place the butt inside. Cook for 6 hours or until the internal temperature reaches 165°F.
Remove the pork from the smoker, then place it in an aluminum roasting pan and sprinkle it with the last ½ cup of brown sugar. Place the unmelted stick of butter on top of the roast, cover the pan with tin foil, and place it back in the smoker.
1 stick Salted butter, 1 cup Brown sugar
Continue smoking for another 4-6 hours, depending on the size of the boston butt, until the internal temperature reaches about 203°F.
Remove, and allow the pork to rest for another 2 hours without removing the foil. Once rested, shred with a fork and enjoy!