Bring a large pot of salted water to a boil. Add the fettuccine and cook according to package instructions until al dente. Drain and set aside.
In a mixing bowl, toss the shrimp with the Cajun seasoning until well-coated.
In a large skillet over medium heat, heat the olive oil. Add the seasoned shrimp and cook for about 2-3 minutes on each side, or until they turn pink and are cooked through. Remove the shrimp from the skillet and set aside.
In the same skillet, add the butter and minced garlic. Sauté for about 1 minute until fragrant.
Pour in the heavy cream and bring to a gentle simmer. Stir in the grated Parmesan cheese until melted and the sauce is creamy. Season with salt and pepper to taste.
Add the cooked fettuccine to the sauce and toss to coat. Gently fold in the cooked shrimp until combined.
Remove from heat and let the dish sit for a minute to thicken slightly.
Serve hot, garnished with chopped parsley for a pop of color.
Notes
Serve hot and garnish with parsley for added flavor.