1. Bring a large pot of salted water to a boil. Cook the linguine until al dente according to package instructions. Reserve 1 cup of pasta water, then drain and set aside.

2. While the pasta cooks, heat olive oil in a large skillet over medium-high heat. Season the beef strips with Cajun seasoning, salt, and pepper. Sear for 2 to 3 minutes per side until browned and cooked through. Remove and set aside.

3. In the same skillet, reduce heat and melt butter. Add garlic and cook until fragrant. Stir in remaining Cajun seasoning and pour in the heavy cream. Let it simmer for 3 to 5 minutes.

4. Add the cooked linguine to the sauce. If needed, loosen the sauce with a splash of reserved pasta water. Add Parmesan cheese and stir until melted and creamy.

5. Return the beef strips to the skillet and gently mix everything together.

6. Plate the pasta and garnish with chopped fresh parsley. Serve hot and enjoy.