Bring a large pot of salted water to a boil and cook the rigatoni pasta according to package instructions until al dente. Drain and set aside.
In a large skillet over medium heat, brown the ground beef and Italian sausage together until fully cooked. Don't forget to drain any excess fat!
Sprinkle in the Cajun seasoning and Italian seasoning, mixing everything together well.
Pour in the chicken broth, whole milk, and heavy cream. Let it all simmer for about 5-10 minutes until the sauce thickens a bit.
Add your cooked rigatoni to the skillet, mixing it in until it’s fully combined.
Toss in the shredded mozzarella cheese and stir until it's all melted and dreamy.
Serve hot and savor the flavors of your Garlic Butter Linguine with Cheesy Beef & Italian Sausage!