Cook the Pasta: Bring a large pot of salted water to a rolling boil. Add the fettuccine and cook according to the package instructions until al dente, typically about 8-10 minutes. Drain the pasta, saving about 1 cup of the cooking water for later use. Set the drained pasta aside.
Season the Shrimp: In a mixing bowl, combine the peeled and deveined shrimp with Cajun seasoning. Toss well to ensure each shrimp is evenly coated with the spice blend.
Sauté the Shrimp: Heat olive oil in a large skillet over medium-high heat. Once hot, add the seasoned shrimp to the skillet in a single layer. Cook the shrimp for 2-3 minutes on each side or until they turn pink and opaque. Once cooked, remove the shrimp from the skillet and set aside on a plate.
Prepare the Alfredo Sauce: Using the same skillet (don’t clean it), reduce the heat to medium. Add the minced garlic and sauté for about 30 seconds or until fragrant, being careful not to burn it. Pour in the heavy cream, stirring gently, and let it simmer lightly for 3-5 minutes until slightly thickened.
Incorporate Cheese: Gradually sprinkle in the grated Parmesan cheese while continuously stirring. Keep stirring until the cheese is fully melted and the sauce is creamy. If the sauce appears too thick, gradually add some reserved pasta water until you reach your desired consistency.
Combine All Ingredients: Add the cooked fettuccine, chopped sun-dried tomatoes, and sautéed shrimp back into the skillet. Toss everything together gently, ensuring the pasta is generously coated in the rich Alfredo sauce.
Season and Garnish: Season the dish with salt and pepper to taste. For those who like heat, sprinkle in some red pepper flakes. Just before serving, remove the skillet from heat and mix in the freshly chopped parsley to add a burst of color and flavor.
Notes
Serve in deep bowls with extra parsley and Parmesan cheese. Lemon wedges can be added for a citrusy touch.