Prepare the Herb Butter: In a mixing bowl, combine the softened butter, chopped rosemary, chopped thyme, minced garlic, Dijon mustard, salt, black pepper, and smoked paprika. Blend well until the herbs and spices are evenly distributed throughout the butter.
Prep the Pork: If using pork belly, ensure it is rolled and tightly tied. If using pork loin, you can roll it and secure it with kitchen twine. Pat the pork dry with paper towels to help the herb butter adhere.
Season the Pork: Rub the entire surface of the pork roll with olive oil, ensuring it's evenly coated. This step adds flavor and helps the herb butter to stick.
Apply the Herb Butter: Generously spread the herb butter mixture over the pork roll, making sure to cover all sides. If you have extra butter, you can score the top of the pork gently with a knife before applying some additional butter into the slits for extra flavor.
Preheat the Air Fryer: Preheat your air fryer to 375°F (190°C) for about 5 minutes.
Air Fry the Pork Roll: Place the pork roll in the air fryer basket, seam side down. Cook at 375°F for 25-30 minutes or until the internal temperature reaches 145°F (63°C). Be sure to check at the 20-minute mark for doneness.
Rest the Meat: Once finished cooking, remove the pork roll from the air fryer and let it rest for at least 10 minutes. This allows the juices to redistribute and keeps the meat tender.
Slice and Serve: Carefully slice the pork roll into rounds and arrange on a serving platter. Garnish with fresh herbs if desired. Serve warm with your favorite sides.