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Creamy Cajun Steak Alfredo

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Prep Time: 25 minutes | Cook Time: 20 minutes
Total Time: 45 minutes
Skill Level: Intermediate
Servings: 4

A Note on the Recipe

Indulge in the ultimate fusion comfort food: tender, pan-seared steak coated in smoky Cajun spices, sliced and nestled in a rich, velvety homemade Alfredo sauce, all served over a bed of fettuccine. This Creamy Cajun Steak Alfredo recipe brings together the bold, fiery flavors of the bayou with the classic, creamy elegance of Italian-American cuisine. It’s a spectacular one-pan dish perfect for a date night at home or for impressing dinner guests.

Ingredients

For the Steak & Cajun Seasoning:

  • 1.5 lbs (680g) flank steak or sirloin, patted dry

  • 2 tablespoons olive oil

  • 1 tablespoon smoked paprika

  • 2 teaspoons garlic powder

  • 1 teaspoon onion powder

  • 1 teaspoon dried oregano

  • 1 teaspoon dried thyme

  • ½ – 1 teaspoon cayenne pepper (adjust for heat)

  • 1 teaspoon fine sea salt

  • ½ teaspoon freshly ground black pepper

For the Alfredo Sauce & Pasta:

  • 12 oz (340g) fettuccine pasta

  • 4 tablespoons unsalted butter

  • 4 cloves garlic, minced

  • 1 ½ cups heavy cream

  • 1 cup freshly grated Parmesan cheese, plus extra for serving

  • ¼ teaspoon freshly grated nutmeg

  • Salt and white pepper to taste

For Garnish:

  • Fresh parsley, finely chopped

  • Thinly sliced green onions

Instructions

Step 1: Prepare the Steak

In a small bowl, combine the smoked paprika, garlic powder, onion powder, oregano, thyme, cayenne, salt, and black pepper. This is your homemade Cajun seasoning. Generously rub the seasoning mix onto both sides of the steak, ensuring an even coat. Let it sit at room temperature for 15-20 minutes while you prepare other components.

Step 2: Cook the Pasta

Bring a large pot of generously salted water to a rolling boil. Add the fettuccine and cook according to package directions until al dente. Reserve 1 cup of the starchy pasta water before draining. Drain the pasta and set aside.

Step 3: Sear the Steak

While the pasta cooks, heat the olive oil in a large cast-iron skillet or heavy-bottomed pan over medium-high heat. Once the oil is shimmering, carefully add the seasoned steak. Sear for 5-7 minutes per side for medium-rare (adjust time for thickness and desired doneness). The steak should have a deep, flavorful crust. Transfer the steak to a cutting board, tent loosely with foil, and let it rest for at least 10 minutes. Do not wash the skillet – you’ll use those delicious browned bits for the sauce.

Step 4: Create the Alfredo Sauce

Reduce the skillet heat to medium-low. Add the butter and let it melt, scraping up any browned bits from the steak. Add the minced garlic and cook for about 1 minute until fragrant, being careful not to burn it.
Pour in the heavy cream, whisking to combine. Let it simmer gently for 3-4 minutes, allowing it to reduce slightly. Gradually whisk in the grated Parmesan cheese until the sauce is smooth and creamy. Season with nutmeg, and a pinch of salt and white pepper. If the sauce is too thick, add a splash of the reserved pasta water to reach your desired consistency.

Step 5: Combine and Serve

Slice the rested steak thinly against the grain into strips. Add the drained fettuccine and sliced steak to the skillet with the Alfredo sauce. Using tongs, gently toss everything together until the pasta is evenly coated and the steak is incorporated. Warm through for 1-2 minutes.

Step 6: Plate and Garnish

Divide the Creamy Cajun Steak Alfredo among warm bowls or plates. Garnish generously with chopped fresh parsley, sliced green onions, and an extra sprinkle of Parmesan cheese. Serve immediately.

Chef’s Notes & Tips

  • Steak Choice: Flank steak is flavorful and slices beautifully, but you can also use ribeye or New York strip for a richer cut.

  • Spice Control: The cayenne pepper brings the heat. Use ½ teaspoon for a mild kick or the full teaspoon (or more) for a fiery experience.

  • Sauce Consistency: Alfredo sauce can thicken quickly. The reserved pasta water is your best tool for thinning it out without diluting flavor.

  • Resting is Key: Allowing the steak to rest ensures juicy, tender slices rather than losing all the juices onto the cutting board.

  • Make it Your Own: Feel free to add sautéed bell peppers, mushrooms, or onions to the sauce for extra vegetables.

Nutrition Information (Per Serving)

  • Calories: ~980 kcal

  • Total Fat: 62g

  • Saturated Fat: 33g

  • Cholesterol: 245mg

  • Sodium: 1150mg

  • Total Carbohydrates: 66g

  • Dietary Fiber: 3g

  • Sugars: 5g

  • Protein: 48g

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