01 - Bring a large pot of salted water to a boil. Add fettuccine or linguine and cook until al dente according to package directions. Drain well and set aside.
02 - In a bowl, toss peeled and deveined shrimp with Cajun seasoning and paprika until each shrimp is coated evenly.
03 - Heat olive oil and 1 tablespoon butter in a large skillet over medium-high heat. Add the shrimp in a single layer and cook for 2 to 3 minutes per side, or until shrimp are pink and opaque. Transfer shrimp to a plate and set aside.
04 - Reduce heat to medium. In the same skillet, add the remaining 2 tablespoons butter and minced garlic. Sauté garlic for 1 minute until fragrant, stirring frequently to avoid burning.
05 - Pour in heavy cream, stirring gently. Let the cream come to a gentle simmer. Add grated parmesan cheese and stir until the cheese is fully melted and the sauce is smooth.
06 - Taste and season the sauce with salt and black pepper as needed, stirring to combine.
07 - Add the cooked pasta to the pan with the sauce. Toss until the pasta is thoroughly coated with the creamy sauce.
08 - Return the seared shrimp to the skillet. Gently fold the shrimp into the pasta and sauce until evenly distributed and warmed through.
09 - Transfer to serving plates and garnish generously with fresh chopped parsley. Serve immediately while hot.