Pulled Pork Mac and Cheese

Bahan-bahan (8 porsi)

• 1 pound elbow macaroni ( or short pasta, approx 3 cups dry pasta)
• ⅓ cup butter
• ⅓ cup all-purpose flour
• 1 ¾ cups whole milk
• 1 ½ cups chicken broth
• 1 ½ teaspoons dry mustard powder
• 1 teaspoon salt
• ¾ teaspoon black pepper
• ½ teaspoon onion powder
• 3 cups shredded sharp cheddar cheese (12oz, divided)
• 1 ½ cups shredded pepper jack cheese (6oz )
• ½ cup shredded Parmesan cheese
• 3 cups prepared pulled pork
• ½ cup barbecue sauce
• green onions (and cilantro, for garnish, optional)