DirectionsStir together the brown sugar, chile powder, paprika, garlic powder, salt, black pepper and cayenne in a small bowl. Rub the mixture all over the pork shoulder. Wrap the pork in plastic wrap and refrigerate for several hours or preferably overnight.
Preheat the oven to 300 degrees F.
Place the pork in a large pot on a bed of the onion halves. Roast until fork-tender and falling apart, about 7 hours. Remove the pork from the pot and set it on a cutting board.
**Sometimes I stop here, shred meat and discard onions/juices. We then eat it plain or add the sauce of our choice to each serving.**
Place the pot on the stove over medium-high heat and add 1/2 to 1 cup of hot water. Scrape the pan to loosen up the bits and cook for 5 minutes to reduce. Pour in the barbecue sauce and stir to heat.
Shred the meat with two forks, then toss in the barbecue sauce until it's coated to your liking! Serve on hamburger rolls.