1. Bring a large pot of salted water to a boil. Cook shell pasta according to package directions. Drain and set aside.

2. Pat steak cubes dry and toss with Cajun seasoning until evenly coated.

3. Heat olive oil in a large skillet over medium-high heat. Sear steak bites in batches, cooking until browned and crusty on all sides. Remove and keep warm.

4. Reduce heat to medium. Add butter to the same skillet and melt, then add minced garlic and cook for about 30 seconds until fragrant.

5. Stir in heavy cream and cream cheese. Whisk until smooth and creamy.

6. Add mozzarella and Parmesan cheese. Stir until fully melted and the sauce is thick.

7. Toss in the cooked shell pasta. Stir to coat evenly in the cheese sauce. Season with salt and pepper to taste.

8. Return steak bites to the skillet and mix gently. Let everything warm through for 1–2 minutes.

9. Garnish with chopped parsley and serve hot directly from the skillet.