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This Cajun Chicken Alfredo is made with bite-sized pieces of chicken for faster, more even cooking, and tender fettuccine in a creamy, garlicky Cajun Alfredo sauce. It’s a bolder, more flavorful twist on classic Chicken Alfredo with just the right amount of kick, and it’s ready in less than 45 minutes.

Close-up view of Cajun Chicken Alfredo in a skillet, showing fettuccine coated in creamy orange-tinted Alfredo sauce with bite-sized browned chicken pieces, diced green bell pepper and celery, chopped parsley, and cracked black pepper. The sauce clings to the noodles and chicken.
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I’ve shared a lot of delicious pasta recipes here at The Forked Spoon, but this Cajun Chicken Alfredo is a favorite BY FAR. What I love most about this version is that the Cajun flavor is worked into the whole dish, not just the chicken. The sauce is richer, more savory, and a little more complex than classic Alfredo sauce, but just as creamy, comforting, and delicious.

Why You’ll Love This Cajun Chicken Alfredo

  • Bite-sized chicken cooks quickly and evenly. Using small pieces of chicken helps the whole recipe come together faster, and it gives you a better chicken-to-pasta-to-sauce balance in every bite.
  • The sauce has more going on than classic Alfredo. Onion, celery, and green bell pepper are cooked right into the sauce, giving it a deeper, more savory flavor from the start.
  • The Cajun flavor is built into the whole dish. Rather than adding all the flavor to the chicken, this recipe builds Cajun seasoning into the sauce too, so the pasta itself tastes just as flavorful as everything else.
  • Big flavor, minimal effort. Everything comes together in one pan for an easy, flavorful pasta dinner without a complicated ingredient list or a lot of extra steps.

Looking for a lighter, broccoli-packed variation, be sure to try my Chicken and Broccoli Alfredo next.

Table of Contents

Key Ingredients and Substitutions

Find the printable recipe with measurements in the recipe card below.

Overhead ingredient photo for Cajun Chicken Alfredo on a light gray marble surface with white text labels placed over each ingredient. Visible ingredients include chopped chicken in a beige bowl, fettuccine, chopped onion, chopped celery, chopped green bell pepper, heavy cream in a glass measuring cup, olive oil in a glass bottle, butter, all-purpose flour, salt, pepper, garlic powder, onion powder, smoked paprika, Cajun seasoning, minced garlic, and grated Parmesan. Each ingredient is labeled with text overlays including CHOPPED CHICKEN, FETTUCCINE, ONION, CELERY, GREEN BELL PEPPER, HEAVY CREAM, OLIVE OIL, BUTTER, ALL-PURPOSE FLOUR, SALT, PEPPER, GARLIC POWDER, ONION POWDER, SMOKED PAPRIKA, CAJUN SEASONING, GARLIC, and PARMESAN.
  • Chicken: I like to make this recipe with bite-sized pieces of boneless skinless chicken breast because they cook quickly, brown evenly, and mix more naturally into the pasta than larger sliced cutlets. Chicken thighs also work.
  • Fettuccine: Fettuccine is my favorite pasta for Alfredo because the long, flat noodles hold onto the sauce so well. Linguine or another similar long pasta will also work.
  • Onion, celery, green bell pepper, and garlic: Often called the holy trinity of Cajun cooking, this mix gives the sauce a deeper, more savory flavor and helps set this version apart from a more classic Alfredo.
  • Cajun seasoning + simple chicken seasonings: Cajun seasoning brings signature heat and flavor to the sauce, while garlic powder, onion powder, smoked paprika, salt, and black pepper help season the chicken. I highly recommend making your own Cajun seasoning blend. Store-bought blends are convenient, but they’re often packed with salt and varying amounts of cayenne pepper.
  • Butter + flour: Butter and flour help create the base of the sauce. Together, they form a light roux that gives the Alfredo a slightly thicker, creamier texture.
  • Heavy cream: I love using heavy cream, but if it tastes and feels too rich, feel free to make this dish with half and half. Half and half is equal parts milk and heavy cream. I do not recommend making Alfredo sauce with whole milk, 2% milk, or plant-based alternatives.
  • Pasta water: Starchy, salted pasta water is liquid magic when it comes to cream-based sauces. It helps loosen up the pasta if the sauce becomes too thick or the noodles dry out. Be sure to save at least 2-3 cups before draining the pasta.
  • Parmesan Cheese: Freshly grated Parmesan melts more smoothly into the sauce and gives it the best flavor. I would skip pre-shredded Parmesan here, which is more likely to make the sauce grainy.

How to Make Cajun Chicken Fettuccine Alfredo

  1. Cook the pasta. Bring a large pot of salted water to a boil and cook the fettuccine until al dente. Before draining, reserve some of the starchy pasta water to help loosen the sauce later if needed.
  1. Season the chicken. Toss the bite-sized chicken pieces with the garlic powder, onion powder, smoked paprika, salt, and pepper until evenly coated.
Overhead view of raw bite-sized chicken breast pieces in a white bowl after being tossed with Cajun-style seasonings. The chicken is evenly coated in a reddish-orange spice mixture. The bowl sits on a light gray marble surface beside a gray-and-white striped kitchen towel with yellow trim.
Overhead view of browned bite-sized chicken pieces cooking in a cream-colored skillet with a black rim and pale handle. The chicken is golden brown with darker caramelized edges, and browned bits are visible on the bottom of the skillet. The pan sits on a light gray marble surface beside a gray-and-white striped kitchen towel with yellow trim.
  1. Cook the chicken. Heat the olive oil in a large skillet. Add the chicken and cook until browned and cooked through, then transfer to a plate.
  1. Sauté the vegetables. Add the butter to the same skillet. Once melted, add the onion, celery, and green bell pepper and cook until softened. Stir in the garlic and cook just until fragrant.
Overhead view of a cream-colored skillet with a black rim and pale handle filled with chopped onion, chopped celery, chopped green bell pepper, and minced garlic in melted butter. The vegetables are separated in small piles before being stirred together. The skillet sits on a light gray marble surface beside a gray-and-white striped kitchen towel with yellow trim.
Overhead view of a cream-colored skillet with a black rim and pale handle filled with softened onion, celery, and green bell pepper. White flour is sprinkled over the vegetables before being stirred in. The skillet sits on a light gray marble surface beside a gray-and-white striped kitchen towel with yellow trim.
  1. Start the sauce. Sprinkle the flour over the vegetables and stir for about 30 seconds, then slowly add the heavy cream, whisking continuously. Add the Cajun seasoning and black pepper, and bring the sauce to a gentle simmer.
  1. Add the Parmesan. Reduce the heat to low and stir in the Parmesan until the sauce is smooth and creamy.
Overhead view of a cream-colored skillet with a black rim and pale handle filled with heavy cream, softened vegetables, black pepper, and a large mound of reddish Cajun seasoning. The cream is still pale with the seasoning piled on top before being stirred in. The skillet sits on a light gray marble surface beside a gray-and-white striped kitchen towel with yellow trim.
Overhead view of a cream-colored skillet with a black rim and pale handle filled with orange-tinted Cajun Alfredo sauce, cooked fettuccine, and browned bite-sized chicken pieces. The pasta and chicken have been added on top of the sauce before being fully tossed together. The skillet sits on a light gray marble surface beside a gray-and-white striped kitchen towel with yellow trim.
  1. Toss everything together. Add the cooked fettuccine and chicken back to the skillet and toss gently until everything is coated in the sauce. If the sauce is too thick, add a splash of reserved pasta water to loosen.
  1. Finish and serve. Top with chopped parsley and extra Parmesan, if desired, and serve right away.

Pro Tips

  • Use homemade Cajun seasoning if possible. It gives you more control over the heat and salt level. If needed, Creole seasoning can be used, but the flavor will be a little different. If you’re using store-bought seasoning, wait to add additional salt until the very end of cooking. Store-bought blends tend to be super salty.
  • Remove the heavy cream from the refrigerator just before you start cooking. Room temperature dairy is less likely to separate when added to a hot pan.
  • Cook the pasta until it is al dente (cooked but still firm to the bite). The pasta will continue to cook once it’s added to the sauce.
  • Reserve at least 2-3 cups of pasta cooking water. It’s great for thinning and emulsifying the sauce, and reviving leftover pasta the next day.
Overhead view of finished Cajun Chicken Alfredo in a cream-colored skillet with a black rim and pale handle. Fettuccine noodles are coated in creamy orange Cajun Alfredo sauce and mixed with bite-sized chicken pieces, chopped parsley, and black pepper. Around the skillet are fresh parsley sprigs, a wooden bowl of Cajun seasoning, a bowl of grated Parmesan, a bowl of chopped parsley, two forks with wooden handles, a small bottle of olive oil, and a gray-and-white striped kitchen towel with yellow trim on a light gray marble surface.

Serving Ideas

We often enjoy this Cajun chicken Alfredo as a meal on its own, but if you’re looking for something to serve on the side, you have plenty of options.

My absolute favorite side is sweet cornbread, but you can also pair it with a vegetable side dish, such as sautéed zucchini, air fryer Brussels sprouts, or roasted asparagus. It’s also delicious with any of these simple salad recipes:

Overhead angled view of Cajun Chicken Alfredo served in a large white bowl with a silver spoon. The bowl is filled with creamy fettuccine, browned bite-sized chicken pieces, chopped parsley, and black pepper. In the background, part of the cream-colored skillet is visible along with a small wooden bowl of Cajun seasoning, fresh parsley, and a gray-and-white striped kitchen towel.

Storage and Reheating Tips

This Cajun chicken Alfredo is best served right away while the sauce is warm and creamy. If you have leftovers, transfer them to an airtight container and store them in the refrigerator for up to 2 to 3 days – freezing is not recommended.

To reheat, warm the pasta gently in a skillet over medium-low heat or in the microwave in short intervals, stirring in between. Add a splash of milk, cream, or reserved pasta water to loosen the sauce as needed.

More Alfredo Recipes

If you try making this creamy Cajun chicken fettuccine Alfredo recipe, I’d love to hear what you think! Please leave a comment and a star rating below; your feedback helps other readers discover (and enjoy) this recipe too. Thank you so much! 💛

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Overhead view of finished Cajun Chicken Alfredo in a cream-colored skillet with a black rim and pale handle. Fettuccine noodles are coated in creamy orange Cajun Alfredo sauce and mixed with bite-sized chicken pieces, chopped parsley, and black pepper. Around the skillet are fresh parsley sprigs, a wooden bowl of Cajun seasoning, a bowl of grated Parmesan, a bowl of chopped parsley, two forks with wooden handles, a small bottle of olive oil, and a gray-and-white striped kitchen towel with yellow trim on a light gray marble surface.
5 from 3 votes

Cajun Chicken Alfredo

Close up photo of Chef Jessica Randhawa of The Forked Spoon in a blue spotted dress, in the sunlightJessica Randhawa
This Cajun Chicken Alfredo is made with bite-sized pieces of chicken, tender fettuccine, and a creamy Cajun Alfredo sauce with onion, celery, green bell pepper, garlic, and Parmesan. It’s a bold, flavorful twist on classic Chicken Alfredo and ready in about 40 minutes.
Prep: 15 minutes
Cook: 25 minutes
Total: 40 minutes
Servings: 6 servings
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Ingredients 

  • 12 ounces fettuccine pasta
  • 1½ pounds boneless, skinless chicken breasts, cut into small bite-sized pieces
  • 1 teaspoon garlic powder
  • 1 teaspoon onion powder
  • 1 teaspoon smoked paprika
  • ½ teaspoon salt
  • ½ teaspoon black pepper
  • 1 tablespoon olive oil

For the Cajun Alfredo Sauce

  • 4 tablespoons unsalted butter
  • 1 small yellow onion, finely chopped
  • 1 celery stalk, finely chopped
  • 1 small green bell pepper, finely chopped
  • 4 cloves garlic, minced
  • 1 tablespoon all-purpose flour
  • 2 cups heavy cream
  • 1 tablespoon Cajun seasoning
  • ½ teaspoon black pepper
  • 1 cup freshly grated Parmesan cheese
  • Chopped parsley, for garnish
  • Extra Parmesan, for serving

Instructions 

  • Bring a large pot of salted water to a boil. Cook the fettuccine until al dente, then reserve about 1 to 2 cups of the pasta water before draining.
  • In a large bowl, toss the chicken with 1 teaspoon garlic powder, 1 teaspoon onion powder, 1 teaspoon smoked paprika, ½ teaspoon salt, and ½ teaspoon black pepper until evenly coated.
  • Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add the chicken and cook for 6 to 8 minutes, stirring occasionally, until browned and cooked through. Transfer the chicken to a clean plate.
  • Reduce the heat to medium and add the butter to the same skillet. Once melted, add the onion, celery, and green bell pepper. Cook for 5 to 7 minutes, stirring often, until softened.
  • Stir in the minced garlic and cook for about 30 seconds, just until fragrant. Sprinkle in the flour and stir well to coat the vegetables.
  • Slowly add the heavy cream, whisking continuously, then stir in 1 tablespoon Cajun seasoning and ½ teaspoon black pepper. Bring the sauce to a gentle simmer and cook for 2 to 3 minutes, stirring often. Do not boil.
  • Reduce the heat to low and stir in 1 cup of freshly grated Parmesan cheese until melted and smooth.
  • Add the cooked pasta and chicken back to the skillet. Toss gently until everything is evenly coated, adding a splash of reserved pasta water as needed to loosen the sauce.
  • Garnish with chopped parsley and serve with extra Parmesan, if desired. Best enjoyed immediately.

Notes

  • The onion, celery, and green bell pepper add a deeper, more savory flavor and help set this version apart from a more classic Alfredo. For best results, dice the vegetables into small, even pieces.
  • Heavy cream gives the sauce its rich, silky texture. I do not recommend swapping it unless you are comfortable experimenting, since lighter options like half-and-half will make the sauce thinner and less rich.
  • If you are using a store-bought Cajun seasoning blend, wait until the end before adding extra salt since many blends are already quite salty.
  • Reserve some of the pasta water before draining. It helps loosen the sauce and keeps it silky and glossy.
  • Spice level: This recipe has just the right amount of kick, but it is easy to adjust. For a milder sauce, use less Cajun seasoning or choose a mild store-bought blend. For more heat, add extra Cajun seasoning, a pinch of cayenne pepper, or a few red pepper flakes.
  • Storage: Store leftovers in an airtight container in the refrigerator for up to 2 to 3 days.
  • Reheating: Reheat gently in a skillet over medium-low heat with a splash of cream, milk, or water to loosen the sauce.
  • Freezing: Freezing is not recommended.

Nutrition

Calories: 807kcal | Carbohydrates: 48g | Protein: 43g | Fat: 49g | Saturated Fat: 28g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 15g | Trans Fat: 0.4g | Cholesterol: 237mg | Sodium: 560mg | Potassium: 758mg | Fiber: 3g | Sugar: 5g | Vitamin A: 2354IU | Vitamin C: 12mg | Calcium: 294mg | Iron: 3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Did you make this? Leave a comment below!
Close up photo of Chef Jessica Randhawa of The Forked Spoon in a blue spotted dress, in the sunlight

Jessica Randhawa

Chef | Food Photographer

Jessica Randhawa leads The Forked Spoon, sharing 15 years of experience and over 1,200 original recipes, kitchen tips, and practical cooking advice. Inspired by her world travels, Jessica's approachable recipes have been featured in outlets such as USA Today, Daily Mail, and CNET. She holds a Bachelor of Science from the University of California.

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Recipe Rating




5 from 3 votes (3 ratings without comment)