With just a hint of spiciness and a burst of creamy goodness, this Cajun Shrimp Alfredo Pasta is about to become your new weeknight hero. In only 20 minutes, you can whip up a satisfying meal that elevates your traditional Alfredo to new heights with the addition of bright, zesty lemon juice and zest. Not only is this dish a delightful crowd-pleaser that’ll impress your family and friends, but it also comes together quickly, making it perfect for those busy evenings when you crave something nourishing yet fabulous. So, ready your skillet and get set to enjoy a comforting taste of Cajun flair in your kitchen—who’s hungry for a twist on a classic?

Why is this pasta dish the best?
Quick Preparation: In just 20 minutes, you can enjoy a restaurant-quality meal right at home!
Bold and Zesty Flavor: The addition of lemon juice and zest elevates the creamy sauce, giving it a refreshing twist that perfectly complements the Cajun kick.
Crowd-Pleasing Appeal: This dish is a guaranteed hit for family dinners or entertaining friends—everyone will be asking for seconds!
Versatile Ingredients: Swap shrimp for chicken or sausage, or use any pasta type you have on hand for a personalized touch.
Easy and Delicious: With straightforward steps, this recipe is great for busy weeknights—you’ll feel like a chef with minimal effort.
For a delightful side, pair it with Tomato Garlic Pasta or serve it alongside some garlic bread!
Cajun Shrimp Alfredo Pasta Ingredients
For the Pasta
• Fettuccine – This pasta provides a perfect base; feel free to substitute with your favorite type of pasta if desired.
For the Shrimp
• Shrimp (1.5 lb. jumbo or large) – Ensure the shrimp is peeled and deveined for ease of cooking and best flavor.
For the Seasoning
• Cajun Seasoning (2 tsp.) – This spice blend adds the necessary heat and depth; brands like Old Bay or Tony Chachere’s work wonderfully.
• Cayenne Pepper (1/2 tsp., optional) – Kick up the heat with this addition; omit if you prefer a milder flavor.
• Onion Powder (2 tsp.) – Boosts the overall flavor profile of the dish.
• Garlic Powder (1 tsp.) – Imparts aromatic depth to the dish.
• Smoked Paprika (2 tsp.) – Adds a delightful smoky essence that complements Cajun flavors.
For the Sauce
• Cooking Oil (2 tbsp.) – Use grapeseed, olive, or avocado oil for searing the shrimp efficiently.
• Butter (4 tbsp., unsalted) – Creates a rich, creamy texture in the sauce.
• Garlic (2 tbsp., minced) – Fresh garlic provides a burst of flavor essential to the sauce.
• Flour (1 tbsp.) – Helps thicken the sauce and forms the roux base.
For the Creamy Base
• Chicken Broth (1 cup) – Contributes savory goodness; low-sodium broth can be used for a lighter touch.
• Heavy Cream (2 cups) – This is key for creating that luscious, creamy sauce.
• Lemon Juice (1 tbsp.) – The secret ingredient that brings brightness and balances the richness of the cream.
• Lemon Zest (1 tsp.) – Enhances the lemon flavor, adding a refreshing note.
• Parmesan Cheese (1/2 cup, freshly grated) – Gives richness and creaminess, a must for Alfredo.
For Garnishing
• Fresh Parsley (2 tbsp., chopped) – A sprinkle for freshness, color, and a final touch of flavor.
• Salt & Pepper – To taste; use with caution as Cajun seasoning contains salt already.
Step‑by‑Step Instructions for Cajun Shrimp Alfredo Pasta
Step 1: Season Shrimp
In a mixing bowl, combine your peeled and deveined shrimp with smoked paprika, garlic powder, onion powder, and Cajun seasoning. Mix until shrimp are thoroughly coated. Set this flavorful shrimp aside as you prepare the pasta. The spices will enhance the Cajun Shrimp Alfredo Pasta with a bold aroma that will have your taste buds tingling.
Step 2: Cook Pasta
Bring a large pot of salted water to a boil. Add the fettuccine, cooking according to package instructions until al dente, usually about 8-10 minutes. Once cooked, carefully drain the pasta, reserving about a cup of the pasta water. This starchy water can be added later to adjust the sauce consistency if needed.
Step 3: Sear Shrimp
In a skillet over medium-high heat, heat 2 tablespoons of cooking oil along with 1 tablespoon of butter. Once hot, add the seasoned shrimp in a single layer, cooking for about 3 minutes on each side until they turn pink and opaque. Remove the shrimp from the skillet and set them aside, keeping the skillet warm for the sauce preparation.
Step 4: Make Roux
Lower the heat to medium and add the remaining 3 tablespoons of butter to the skillet. Once melted, whisk in 1 tablespoon of flour, stirring continuously for about 1-2 minutes until it forms a smooth roux and turns a light golden color. This step is crucial for thickening the sauce of your Cajun Shrimp Alfredo Pasta.
Step 5: Create Sauce
Gradually pour in 1 cup of chicken broth and 2 cups of heavy cream while whisking to combine. Bring the mixture to a gentle simmer, stirring consistently to prevent lumps. As it thickens, add in the lemon juice, lemon zest, minced garlic, and a sprinkle of Cajun seasoning while tasting for balance, ensuring the sauce hits just the right spot.
Step 6: Finish Sauce
Allow the sauce to simmer uncovered for 10 minutes, stirring occasionally. As it thickens, mix in half a cup of freshly grated Parmesan cheese and 2 tablespoons of chopped parsley. Let it simmer for another 5 minutes, allowing the flavors to meld beautifully while achieving a rich and creamy texture in your Cajun Shrimp Alfredo Pasta.
Step 7: Combine
Once the sauce is perfectly thick, add the drained fettuccine to the skillet and toss gently until the pasta is well coated with the creamy sauce. Add the seared shrimp on top, folding them into the dish. If the sauce is too thick, you can incorporate a little reserved pasta water to achieve the desired consistency.
Step 8: Serve
Plate your delicious Cajun Shrimp Alfredo Pasta, garnishing with additional chopped parsley and a sprinkle of Cajun seasoning, if desired. Serve this dish warm, letting its captivating aroma fill your kitchen, and get ready to impress your family with this quick yet delightful meal.

Storage Tips for Cajun Shrimp Alfredo Pasta
Fridge: Store any leftovers in an airtight container for up to 3 days. This keeps the dish fresh and prevents drying out.
Freezer: For longer storage, freeze portions in airtight containers for up to 2 months. To reheat, ensure a gentle simmer to maintain the creamy sauce texture.
Reheating: When reheating, add a splash of cream or reserved pasta water to help restore the sauce’s creaminess and prevent separation.
Serving Suggestion: For a delightful second serving, consider pairing warm Cajun Shrimp Alfredo Pasta with a refreshing salad or some garlic bread for a satisfying meal experience.
What to Serve with Cajun Shrimp Alfredo Pasta
A complete meal deserves thoughtful pairings that enhance every bite and make your dining experience truly special.
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Garlic Bread: This classic side is perfect for soaking up the rich sauce, creating a delightful textural contrast to the creamy pasta.
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Caesar Salad: Crisp romaine lettuce, creamy dressing, and Parmesan add freshness and a zesty tang, balancing the richness of the pasta beautifully.
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Steamed Broccoli: Tender, vibrant green florets provide a satisfying crunch that complements the dish’s creaminess while adding a nutritious touch to your plate.
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Cucumber Tomato Salad: A refreshing medley of cucumbers and tomatoes drizzled with a light vinaigrette complements the flavors of the pasta and adds brightness to the meal.
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Red Wine: A glass of medium-bodied red, like a Merlot or Chianti, enhances the Cajun spices and rich flavors for a comforting dinner ambiance.
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Lemon Sorbet: For dessert, a light lemon sorbet cleanses the palate and ties back to the lemon notes in the pasta, making for a delightful end to your meal.
Make Ahead Options
This Cajun Shrimp Alfredo Pasta is an excellent candidate for meal prep, saving you valuable time on busy weeknights! You can prepare the creamy sauce up to 3 days in advance, allowing the flavors to blend beautifully. Simply follow the instructions to create the sauce, then let it cool before transferring it to an airtight container—this will help maintain its rich texture. The shrimp can be seasoned and stored in the fridge for up to 24 hours as well. When you’re ready to serve, just cook the pasta, heat the sauce gently over low heat, and toss it all together for a quick, restaurant-quality meal that’s just as delicious as when freshly made!
Cajun Shrimp Alfredo Pasta Variations & Substitutions
Feel free to mix things up and adapt this recipe to your taste preferences! Each variation will bring a new twist to your Cajun Shrimp Alfredo Pasta.
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Protein Alternatives: Swap shrimp with diced chicken or spicy sausage for a hearty twist. Both options provide different flavor profiles while still complementing the creamy sauce.
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Pasta Options: Use any pasta shape such as penne, rigatoni, or even whole wheat for health-conscious diners. Choose what’s on hand or what your family prefers!
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Vegetarian Version: Omit shrimp and add colorful vegetables like bell peppers, zucchini, or spinach for a vibrant, meatless adaptation. This allows all the creaminess to shine through while boosting nutrition.
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Spice Levels: Adjust the heat by adding more cayenne pepper or a dash of hot sauce to the sauce. You could also turn down the spice entirely for a milder taste that the whole family will love.
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Citrus Twist: Beyond lemon, consider using lime juice and zest for a different zesty flavor that brings a unique twist to the creamy sauce.
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Herb Infusion: Incorporate fresh herbs like thyme or basil for an aromatic touch. These can add freshness that brightens the dish even further.
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Cheesy Delight: Sprinkle more cheese like feta or Monterey Jack on top for added creaminess and a new flavor dimension. A little crumbled blue cheese could also provide a fabulous tang!
And if you’re looking to explore other fantastic seafood dishes, check out our recipes for Keto Garlic Shrimp or indulge in an elegant Crab and Shrimp Stuffed Salmon!
Expert Tips for Cajun Shrimp Alfredo Pasta
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Pasta Perfection: Use a generous amount of salt in the water to ensure your pasta is well-seasoned, enhancing the overall taste of your Cajun Shrimp Alfredo Pasta.
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Shrimp Timing: Avoid overcooking the shrimp; they should be perfectly pink and tender after about 3 minutes on each side. Remove them as soon as they’re cooked to maintain their moisture.
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Ease of Preparation: To save time, consider prep work ahead; chop garlic and season shrimp before mealtime to streamline the cooking process.
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Creamy Consistency: If the sauce thickens too much, gradually add a splash of reserved pasta water until the desired creaminess of your Cajun Shrimp Alfredo Pasta is achieved.
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Flavor Balancing: Taste the sauce before serving; adjust the seasoning with more lemon juice or Cajun seasoning to suit your taste preferences.
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Fresh Ingredients Matter: Using fresh garlic and lemon will elevate the dish’s flavor—don’t skimp on these key ingredients for the best results!

Cajun Shrimp Alfredo Pasta Recipe FAQs
How do I choose the right shrimp for this recipe?
Absolutely! When selecting shrimp, look for fresh or frozen jumbo or large shrimp, ensuring they are peeled and deveined for convenience. If using frozen shrimp, thaw them in the refrigerator overnight or quickly in cold water for about 15-20 minutes. Avoid shrimp with dark spots or a fishy smell—these are indicators they may not be fresh!
How should I store leftovers?
I recommend storing any leftover Cajun Shrimp Alfredo Pasta in an airtight container in the fridge for up to 3 days. This helps maintain its freshness. If you want, reheat gently over low heat and add a splash of cream or pasta water to restore creaminess.
Can I freeze this Cajun Shrimp Alfredo Pasta?
Absolutely! You can freeze this dish for up to 2 months. To do this, portion out the pasta and sauce in airtight containers or freezer bags. When you’re ready to eat, thaw overnight in the refrigerator and reheat in a saucepan over medium heat, adding a bit of cream or chicken broth to help with consistency.
What should I do if my sauce is too thick?
No stress! If your sauce turns out too thick, simply add a splash of the reserved pasta water or some additional heavy cream while stirring until it reaches your desired consistency. Additionally, keep the heat low to prevent the sauce from burning while you make these adjustments.
Is this recipe suitable for individuals with dietary restrictions?
Very much so! If you’re making this dish for someone with gluten sensitivities, you can easily use gluten-free pasta. For dairy allergies, substitute heavy cream with coconut cream or a non-dairy cream alternative. Just be mindful of Cajun seasoning, as it may contain allergens—check the label before using!
How can I enhance the Cajun flavor?
To intensify the Cajun essence, try adding more Cajun seasoning or even a pinch of cayenne pepper to increase the heat. If you enjoy extra spice, tossing in some chopped jalapeños or a dash of hot sauce when serving can also give it that delightful kick you’re looking for.
These tips will ensure your Cajun Shrimp Alfredo Pasta is as delicious and satisfying as possible! Enjoy cooking and savor every bite!

Cajun Shrimp Alfredo Pasta with a Zesty Lemon Twist
Ingredients
Equipment
Method
- In a mixing bowl, combine your peeled and deveined shrimp with smoked paprika, garlic powder, onion powder, and Cajun seasoning. Mix until shrimp are thoroughly coated. Set aside.
- Bring a large pot of salted water to a boil. Add the fettuccine, cooking until al dente, about 8-10 minutes. Drain, reserving some pasta water.
- In a skillet over medium-high heat, heat cooking oil and butter. Once hot, add the shrimp, cooking for about 3 minutes on each side. Remove from the skillet and set aside.
- Lower heat and add remaining butter to the skillet. Whisk in flour, stirring for 1-2 minutes until it forms a smooth roux.
- Gradually pour in chicken broth and heavy cream while whisking. Simmer gently, then add lemon juice, lemon zest, garlic, and Cajun seasoning to taste.
- Simmer uncovered for 10 minutes. Mix in Parmesan cheese and parsley and let simmer for another 5 minutes.
- Add drained fettuccine to the skillet, tossing gently to coat with the sauce. Add the seared shrimp, folding them into the dish. Adjust sauce consistency with reserved pasta water if needed.
- Plate the Cajun Shrimp Alfredo Pasta, garnishing with additional parsley and Cajun seasoning if desired. Serve warm.

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