Instructions

1. Preheat the oven to 325°F (160°C).
2. In a small bowl, mix together the garlic powder, dried oregano, salt, and black pepper to create the spice rub.
3. Rub the pork shoulder generously with the spice mixture, ensuring it's evenly coated on all sides.
4. Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Sear the pork shoulder on all sides until browned, about 5 minutes per side.
5. Transfer the seared pork shoulder to a roasting pan and roast in the preheated oven for about 3 hours, or until the internal temperature reaches 145°F (63°C).
6. Once cooked, remove the pork shoulder from the oven and let it rest for 10 minutes before slicing thinly.
7. While the pork is resting, heat the remaining 2 tablespoons of olive oil in a skillet over medium heat.
8. Add the sliced onions and sauté, stirring occasionally, until caramelized and golden brown, about 10-12 minutes.
9. Slice the Italian rolls in half and place a slice of provolone cheese on the bottom half of each roll.
10. Top the cheese with slices of the roast pork and the sautéed onions.
11. Place the assembled sandwiches under the broiler for 2-3 minutes, or until the cheese is melted and bubbly.
12. Serve the Philly Roast Pork Sandwiches hot and savor every bite!