Creating Cajun Steak Tips in Cheesy Rigatoni Parmesan Sauce is simple when you follow these steps:

1. Prepare the Steak: Toss the steak tips with Cajun seasoning in a bowl until evenly coated. Let them marinate for about 10 minutes.
2. Cook the Pasta: In a large pot, bring salted water to a boil. Add the rigatoni and cook according to package instructions until al dente. Drain and set aside.
3. Sear the Steak: In a large skillet, heat olive oil over medium-high heat. Add the steak tips and sear for about 3-4 minutes on each side or until cooked to your desired doneness. Remove the steak from the skillet and set aside.
4. Make the Sauce: In the same skillet, add minced garlic and sauté for 1 minute until fragrant. Pour in the heavy cream, salt, and black pepper. Stir well and bring to a simmer.
5. Add Cheese: Gradually add the Parmesan and mozzarella cheese to the cream mixture, stirring until melted and smooth.
6. Combine Pasta and Steak: Add the cooked rigatoni and seared steak tips to the sauce. Toss to coat the pasta and steak evenly with the cheesy sauce.
7. Serve: Garnish with freshly chopped parsley before serving for a burst of color and flavor.