Heat oven to 350° F.
In microwave, warm pulled pork according to package instructions.
Slice rolls in half. Place bottom halves of slider rolls in 9-by-13-inch baking dish and top each with pulled pork.
Microwave macaroni and cheese according to package directions and spoon evenly over pork on each sandwich roll.
Drizzle barbecue sauce over sandwiches.
Lay cheese in two rows of three over sliders.
Top with top halves of slider rolls.
Stir dry rub into butter. Spoon evenly over tops of sandwiches. Sprinkle with parsley.
Bake, uncovered, 10 minutes.