Step 1: Cook the pasta
Boil elbow macaroni according to package instructions until al dente. Drain and set aside.

Step 2: Brown the beef
In a large skillet over medium heat, cook 1 lb ground beef until browned. Drain excess grease. Season with salt and pepper to taste.

Step 3: Mix in the BBQ sauce
Add ½ cup BBQ sauce to the cooked beef. Stir well and simmer for 2–3 minutes to let the flavors combine.

Step 4: Make the cheese sauce
In a saucepan, heat 1 cup heavy cream over low heat. Gradually stir in 1 cup shredded cheddar cheese until melted and smooth. Remove from heat.

Step 5: Assemble the casserole
Preheat oven to 375°F (190°C). In a large bowl, combine the cooked pasta, beef-BBQ mixture, crumbled bacon, and cheese sauce. Mix until well combined.

Step 6: Bake the casserole
Pour the mixture into a greased 9×13-inch baking dish. Sprinkle ¼ cup breadcrumbs evenly over the top. Bake for 15–20 minutes or until bubbly and lightly golden on top.

Step 7: Serve hot
Let cool for 5 minutes before serving. Garnish with extra cheese, chopped parsley, or crispy onions if desired.