- Season pork butt with 3 tablespoons of your favorite barbecue seasoning blend and liquid smoke. Place in 3- to 4-quart slow cooker. Cover and cook on Low 10 to 12 hours (High: 5 to 6 hours).
- Remove pork from slow cooker with tongs and place in 13x9x2-inch baking dish. Use tongs, 2 forks or fingers to shred pork; stir in barbecue sauce.
- Cook pasta according to package directions; drain and return to saucepan. Stir in cheese sauce, Cheddar cheese, black pepper and remaining 1 tablespoon barbecue seasoning blend. Cook and stir over medium heat until all cheese is melted.
- Serve pulled pork over mac & cheese.