Rich, creamy, and with a lively kick of spices, this Cajun Shrimp Fettuccine Alfredo is the kind of dinner that impresses without demanding hours in the kitchen. Tender shrimp, smoky sausage, and a silky Parmesan cream sauce cling to ribbons of fettuccine for a satisfying meal that balances comfort and bold flavor. Below you’ll find an approachable ingredient list, precise steps, and a few tips to make this your new weeknight favorite.

Ingredients

8 ounces fettuccine pasta
1 tablespoon olive oil
1 pound medium-sized shrimp, shelled and deveined
2 tablespoons Cajun seasoning
1/2 pound Andouille sausage, sliced into 1/4 inch circles
1 small yellow onion, diced
2 cloves garlic, minced
1/4 cup chicken stock
1 cup heavy cream
1 cup grated Parmesan cheese
1 teaspoon black pepper
1/4 teaspoon cayenne pepper
Minced parsley, for garnish

Why you’ll love this recipe

This Cajun Shrimp Fettuccine Alfredo combines the best of both worlds: classic Italian comfort and bold Southern spices. The sauce is creamy and luxurious, but the Cajun seasoning and cayenne lend just enough heat to keep every bite interesting. It’s quick enough for a weeknight and pretty enough for guests.

Prep and cooking notes

Bring a large pot of salted water to a boil for the pasta so it cooks evenly.
Use medium-sized shrimp so they cook quickly and stay tender.
Slice the sausage thinly for even browning and to distribute flavor throughout the dish.
Measure the Parmesan and add slowly to the sauce so it melts smoothly without clumping.

Step-by-step Directions

Bring a large pot of salted water to a boil. Add 8 ounces fettuccine pasta and cook according to the package directions until al dente. Reserve about 1/2 cup of the pasta cooking water, then drain the pasta and set aside.
While the pasta cooks, heat 1 tablespoon olive oil in a large skillet over medium-high heat. Add 1/2 pound Andouille sausage, sliced into 1/4 inch circles, and cook until browned on both sides, about 3 to 4 minutes. Remove the browned sausage from the skillet and set aside.
In the same skillet, add the 1 pound medium-sized shrimp, shelled and deveined. Sprinkle the shrimp with 2 tablespoons Cajun seasoning and cook until the shrimp turn pink and are opaque throughout, about 2 to 3 minutes per side depending on thickness. Remove the cooked shrimp and set them aside with the sausage.
Add the diced 1 small yellow onion to the skillet and cook over medium heat until softened and translucent, about 3 to 4 minutes. Add 2 cloves garlic, minced, and cook for 30 to 60 seconds until fragrant, stirring constantly so the garlic does not burn.
Pour in 1/4 cup chicken stock to deglaze the pan, scraping up any browned bits from the bottom of the skillet. Let the stock simmer for 1 to 2 minutes so it reduces slightly.
Reduce the heat to low and stir in 1 cup heavy cream. Heat gently until the cream begins to steam but does not boil. Slowly whisk in 1 cup grated Parmesan cheese until the sauce is smooth and slightly thickened.
Season the sauce with 1 teaspoon black pepper and 1/4 teaspoon cayenne pepper. Taste and adjust seasoning if needed.
Add the drained fettuccine to the skillet with the sauce, tossing to coat the noodles evenly. If the sauce seems too thick, add a splash of the reserved pasta cooking water a little at a time until you reach the desired consistency.
Return the cooked shrimp and browned sausage to the skillet, folding them into the pasta and sauce so they are evenly distributed and warmed through, about 1 to 2 minutes.
Remove from heat. Divide the Cajun Shrimp Fettuccine Alfredo among plates or a large serving bowl. Garnish with minced parsley and an extra dusting of Parmesan if desired. Serve immediately.

Make-ahead and storage

You can prepare the components ahead of time: cook the pasta and refrigerate separately from the sauce. Reheat gently on the stovetop with a splash of chicken stock or cream to bring the sauce back to a silky texture. Store leftovers covered in the refrigerator for up to 3 days. Reheat over low heat, stirring frequently.

Frequently asked questions

Can I use a different sausage? Yes. Use a smoked sausage with similar texture and flavor; slice it into 1/4 inch circles so it cooks evenly and blends well with the shrimp and sauce.

How can I control the heat level? Reduce or omit the 1/4 teaspoon cayenne pepper if you want a milder sauce. The 2 tablespoons Cajun seasoning brings most of the flavor; choose a mild blend if you prefer less heat.

Can I make this lighter? Substitute light cream or a mixture of milk and a little cornstarch to thinly mimic creaminess, but the texture and richness will be different. The recipe as written yields a classic, indulgent Alfredo-style sauce.

Serving suggestions

Pair with a crisp green salad dressed in a lemon vinaigrette to cut through the richness.
Serve with crusty bread to mop up any extra sauce.
A chilled glass of white wine, like Pinot Grigio or Sauvignon Blanc, complements the dish nicely.

Final tips for success

Do not overcook the shrimp; they should be opaque and just firm to the bite.
Add the Parmesan slowly to avoid clumping and to help the sauce emulsify.
Adjust the sauce consistency with reserved pasta water for a silky finish that clings to the fettuccine.

This Cajun Shrimp Fettuccine Alfredo walks the line between indulgent and spicy, offering a quick yet impressive meal that’s perfect for weeknights or casual dinner parties. Happy cooking—and enjoy every creamy, spicy forkful.

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Cajun Shrimp Fettuccine Alfredo

Creamy fettuccine with Cajun-seasoned shrimp and Andouille sausage in a rich Parmesan alfredo sauce.

Prep Time10

Cook Time20

Total Time30

Servings: 4 servings

Ingredients

8 ounces fettuccine pasta
1 tablespoon olive oil
1 pound medium shrimp shelled and deveined
2 tablespoons Cajun seasoning
1/2 pound Andouille sausage sliced into 1/4-inch rounds
1 small yellow onion diced
2 cloves garlic minced
1/4 cup chicken stock
1 cup heavy cream
1 cup Parmesan cheese grated
1 teaspoon black pepper
1/4 teaspoon cayenne pepper
parsley minced, for garnish (optional)

Instructions

Bring a large pot of salted water to a boil, cook the fettuccine according to package directions until al dente, drain, and set aside.
Heat the olive oil in a large high-sided skillet over medium-high heat.
Toss the shrimp with the Cajun seasoning, add to the hot skillet, and cook about 4–5 minutes until pink and cooked through; transfer the shrimp to a plate and set aside.
In the same skillet, add the sliced Andouille sausage and diced onion and sauté until the onion is translucent and the sausage begins to brown, about 4–5 minutes.
Add the minced garlic and cook for about 30 seconds until fragrant.
Pour in the chicken stock and scrape up any browned bits from the bottom of the pan.
Add the heavy cream, grated Parmesan, black pepper, and cayenne; stir to combine and simmer over medium heat until the sauce begins to thicken, about 5 minutes, stirring frequently to prevent scorching.
Return the cooked shrimp to the skillet, add the drained fettuccine, and toss gently to coat. If the sauce is too thick, thin with a little milk; if too thin, simmer a bit longer until desired consistency is reached.
Serve immediately with a sprinkle of minced parsley, if desired.