Prepare the Pasta
Boil a large pot of salted water and cook the pasta until al dente Reserve 1 cup of pasta water then drain and set aside

Cook the Steak
Let the steak sit at room temperature for 30 minutes before cooking Season generously with salt and pepper Heat olive oil in a skillet over medium-high heat Sear the steak for 3-5 minutes per side depending on thickness and preferred doneness Remove from the pan and let it rest for 5-10 minutes before slicing thinly against the grain

Make the Sauce
In the same pan melt butter and sauté minced garlic until fragrant
For the creamy garlic Parmesan sauce add heavy cream and Parmesan cheese Stir until smooth and creamy
For the spicy Cajun sauce add heavy cream Cajun seasoning smoked paprika and cayenne pepper Simmer until the sauce thickens slightly

Combine Steak and Pasta
Add the cooked pasta to the sauce Toss gently to coat adding reserved pasta water as needed for desired consistency Add the sliced steak and toss again until well combined

Serve
Garnish with fresh parsley extra Parmesan cheese or red pepper flakes Serve hot and enjoy