Preheat the oven to 350 degrees F and spray a 9x13 casserole dish with non-stick spray.
Bring a large pot filled with salted water to a boil over high heat.
Add in elbow macaroni and cook just until al dente following box directions.
Drain pasta and set it aside while you prepare the cheese sauce.
Add a large skillet over medium heat and add butter.
Once the butter is melted whisk in flour.
Slowly whisk in milk until smooth.
Reduce the heat to low and whisk slowly until the sauce becomes thick and creamy.
Stir in the shredded cheese and stir until completely melted.
Turn off the heat and stir in macaroni.
Add macaroni and cheese to the prepared dish and top with pulled pork. Sprinkle on a little extra cheese if desired.
You will have leftover pulled pork so don't be concerned if it does not all get used.
Bake for about 15 minutes just to help warm the mixture through.
Drizzle with extra BBQ sauce if desired.