Red Lobster Cajun Chicken Alfredo Copycat Recipe: Spicy Creamy Sauce With Crisp Celery Crown

This Red Lobster Cajun Chicken Alfredo copycat recipe delivers the restaurant's signature spicy, creamy sauce and crisp celery crown at home. I've spent years perfecting copycat techniques, and this version nails the balance of heat, richness, and that signature celery garnish.

The secret lies in properly seasoning the chicken and building the sauce layer by layer—no shortcuts for authentic flavor.

The dish starts with chicken thighs marinated in Cajun seasoning, then seared to golden perfection before simmering in the creamy alfredo. That signature celery crown requires precise cutting and quick frying for maximum crispiness.

Every element comes together in a way that mimics Red Lobster's version down to the last detail. What you'll achieve is restaurant-quality Cajun chicken with a velvety alfredo sauce that's both spicy and rich.

This recipe requires just 30 minutes of active prep time, though the sauce needs 15 minutes to thicken properly. The result is tender, flavorful chicken swimming in a sauce that's neither too thin nor too heavy, topped with crisp celery that adds both texture and visual appeal.

It's the kind of dish that impresses even skeptical guests while being simple enough for weeknight dinners.

Serve with garlic bread or roasted potatoes to complete the meal. The sauce's creamy texture and Cajun heat make this a standout dish that rivals the original. Here's how to recreate it perfectly at home—no Red Lobster trip required.

Ingredients for red lobster cajun chicken alfredo copycat

The secret to Red Lobster’s signature dish starts with properly seasoned chicken and creamy sauce layers.

The chicken thighs are non-negotiable for this copycat—skin-on adds the essential fat and flavor that dry breasts lack. Costco often sells them pre-seasoned, but for authenticity, marinate them yourself in Penzeys Cajun seasoning, which balances heat and depth better than store brands. The celery needs to be thinly sliced and blanched for that signature crisp crown; Trader Joe's celery is consistently fresh and affordable. For the sauce, homemade alfredo is worth the effort—Rao's jarred sauce works in a pinch, but the homemade version has a velvety texture that's hard to replicate.

No Cajun seasoning? 1 tbsp smoked paprika + 1 tsp cayenne + 1 tsp garlic powder + 1 tsp onion powder mimics the heat profile. Dried thyme and oregano can replace fresh herbs at half the amount. For the alfredo, heavy cream is non-negotiable—evaporated milk can stretch it but won't give the same richness. The celery crown can be made with green onions or asparagus tips if celery is unavailable, though the flavor won't be identical. Always use low-sodium broth to control saltiness, as the Cajun seasoning and Parmesan add plenty of salt on their own.

The chicken thighs should be cooked skin-side down first to render fat and create crispy skin. Rest the chicken for 10 minutes before slicing to retain juices. The sauce thickens best when simmered uncovered—do not cover to prevent a greasy texture. Store leftovers in airtight containers for 4-5 days in the fridge; the sauce tastes even better the next day as flavors meld. For freezing, portion into 1-cup containers and freeze for up to 3 months. Reheat gently on the stovetop to avoid separating the cream and sauce. The celery crown, however, should be fried fresh and added just before serving—it loses crispness quickly.

Step-by-step instructions for Red Lobster Cajun chicken Alfredo copycat recipe

Here's the method that delivers that signature Red Lobster flavor at home.

Heat the ¼ cup olive oil in a large skillet over medium-high heat until shimmering. Pat the boneless chicken thighs dry with paper towels—this ensures a proper sear. Season both sides generously with the 2 tbsp Cajun seasoning, 1 tsp salt, and ½ tsp black pepper, pressing the seasoning into the meat so it adheres well.

Place the chicken thighs in the skillet and cook for 5-6 minutes per side until golden brown and cooked through to an internal temperature of 165°F. The skin should develop a nice crust, and the chicken should release easily from the pan. Remove the chicken from the skillet and set aside on a plate, tenting loosely with foil to keep warm. Don't drain the skillet—those flavorful browned bits are essential for the sauce.

In the same skillet (with all those flavorful bits), reduce the heat to medium and add the minced 6 garlic cloves. Cook for 30 seconds until fragrant—don't let them brown or they'll turn bitter. Immediately add the ¼ cup all-purpose flour and stir vigorously for 1-2 minutes, creating a roux that will thicken the sauce.

Slowly pour in the 1 cup chicken broth while whisking constantly to prevent lumps from forming. Let the mixture simmer for 2 minutes until it begins to thicken. Then, gradually whisk in the 2 cups heavy whipping cream and 2 cups Alfredo sauce. Stir in the 1 tbsp lemon juice, which brightens the flavors and balances the richness. The sauce should be smooth and creamy—if it's too thick, add a splash of warm water or chicken broth to reach your desired consistency.

Return the chicken thighs to the skillet, spooning the sauce over them to coat evenly. Simmer for 2-3 minutes to let the chicken absorb the sauce and reach the perfect temperature. Remove the skillet from heat and stir in the ½ cup butter and 1 cup Parmesan cheese until fully melted and combined. Taste and adjust seasoning if needed—you might want to add a pinch more salt or black pepper to enhance the Cajun flavor.

While the sauce finishes, prepare the celery crown by slicing the 1 lb celery stalks into thin, even strips. Heat a separate skillet over medium heat with ¼ cup olive oil and sauté the celery for 3-4 minutes until crisp-tender and golden brown. The celery should retain some crunch but be fully cooked through.

Divide the creamy Cajun Alfredo sauce among four serving dishes, placing one 1½ lb chicken thigh in each. Top each serving generously with the crisp celery crown. Garnish with additional grated Parmesan cheese and a sprinkle of black pepper if desired. Serve immediately while the chicken is hot and the celery crown is crisp.

This dish delivers the perfect balance of spicy Cajun heat, rich Alfredo creaminess, and the satisfying crunch of the celery crown. Each bite combines tender chicken with a velvety sauce that clings perfectly to every strand of celery, just like the restaurant version.

Dietary considerations for this recipe

Gluten-Free Adaptation

For a gluten-free version, swap the all-purpose flour in the roux with 1/4 cup gluten-free all-purpose flour (like Bob's Red Mill 1:1). I've tested this blend, and it thickens the sauce beautifully without altering the texture.

Just ensure your Cajun seasoning and Alfredo sauce are certified gluten-free—Penzeys brand is a safe choice. The celery crown remains unchanged, so no adjustments are needed there. 🌟

Dairy-Free Alternative

To make this dish dairy-free, replace the heavy whipping cream and Parmesan cheese with coconut cream (full-fat) and nutritional yeast for that cheesy flavor. I've found So Delicious coconut cream works perfectly—just reduce the amount slightly since it's thicker.

Skip the butter entirely, as it's not essential for the sauce's richness. Taste as you go, as coconut cream has a distinct flavor that pairs well with Cajun spices.

Lower-Sodium Options

This recipe already uses low-sodium chicken broth, but if you're watching sodium, double-check your Cajun seasoning label—some brands add extra salt. I recommend Penzeys Cajun seasoning, which balances heat and flavor without excessive sodium.

Skip adding extra salt during cooking, and taste before serving. The Parmesan cheese and black pepper add enough depth naturally. Your taste buds will adjust quickly to the authentic Cajun kick! 💛

Spicier Heat Control

If you want to dial up the heat, increase the Cajun seasoning to 3 tbsp or add 1/2 tsp cayenne pepper to the sauce. For a milder version, reduce the seasoning to 1 tbsp and omit the cayenne.

I like to keep it authentic, so I stick with the original 2 tbsp—it’s spicy enough to satisfy most palates without overwhelming. Always taste before serving and adjust to your preference. Honestly, the first time I served this with extra cayenne, my guests asked for seconds anyway! 🔥

Allergy-Friendly Swaps

For those with shellfish allergies, ensure your Cajun seasoning doesn’t contain shrimp or crawfish—some blends do. I use Penzeys because it’s clearly labeled and safe. If someone in your household has a dairy allergy, the dairy-free adaptation above works seamlessly.

Always double-check labels on pre-made sauces and broths to avoid hidden allergens. Safety first—no one wants an allergic reaction ruining the meal! ⚡

Frequently asked questions