01 -
Preheat oven to 350°F.
02 -
Boil elbow macaroni in a large pot of salted water according to package instructions. Drain thoroughly.
03 -
In a large bowl, combine drained macaroni with cooked pulled beef and set aside.
04 -
In a medium saucepan over medium-high heat, melt 3 tablespoons of butter. Whisk in flour and salt until a smooth paste forms.
05 -
Gradually whisk in milk and bring to a gentle simmer, stirring frequently until mixture thickens and coats the back of a spoon.
06 -
Remove saucepan from heat and stir in shredded cheddar cheese blend until melted and completely smooth.
07 -
Pour cheese sauce over the macaroni and beef mixture. Toss well to coat evenly.
08 -
Transfer mixture to a 2-quart casserole dish. Sprinkle bread crumbs evenly over the surface.
09 -
Melt the remaining 3 tablespoons of butter and drizzle evenly over bread crumbs.
10 -
Bake uncovered in the preheated oven for about 20 minutes, or until top is golden brown and bubbling.
11 -
Remove casserole from oven. Drizzle with BBQ sauce before serving.