Creating Cheesy Beef and Italian Sausage Rigatoni in Garlic Butter Sauce is an enjoyable cooking experience. Follow these steps to ensure success:

1. Cook the Pasta: In a large pot, bring salted water to a boil. Add rigatoni pasta and cook according to package instructions until al dente. Drain and set aside.
2. Brown the Meat: In a large skillet over medium heat, add the olive oil. Introduce the ground beef and Italian sausage, cooking until browned and fully cooked, about 7-10 minutes.
3. Sauté Garlic: Add the minced garlic to the skillet with the meats, cooking for another minute until fragrant.
4. Season: Sprinkle in the Italian seasoning and red pepper flakes, continuing to stir until evenly distributed.
5. Add Broth and Cream: Pour in the beef broth and heavy cream, stirring to combine. Let the mix simmer for about 5 minutes.
6. Incorporate Pasta: Add the cooked rigatoni to the skillet and stir until the pasta is fully coated with the sauce.
7. Cheesy Fusion: Gradually add the mozzarella and Parmesan cheese, stirring until melted and creamy.
8. Adjust Seasoning: Taste and add salt and black pepper as needed.
9. Serve Hot: Remove from heat and garnish with fresh basil or parsley before serving.

These steps create a dish that is not only delicious but also beautifully presented.