Creamy Cajun chicken spaghetti is the weeknight dinner I make when I want something that tastes like it came from a restaurant but only uses one skillet and a pot of pasta. Bold Cajun-spiced chicken, a velvety garlic mozzarella cream sauce, and a bubbly broiled cheese topping all come together in one deeply satisfying dish. The first time I made this, my kids went back for seconds before I even sat down.
The smell alone when the Cajun chicken hits the hot skillet is enough to bring everyone to the kitchen. The cream sauce is rich and smooth, the pasta soaks up every drop, and that broiled mozzarella finish is the kind of thing that makes dinner feel like an occasion.This is about to become your new favorite weeknight pasta.
Make this tonight.
Table of Contents
Ingredients for Creamy Cajun Chicken Spaghetti
I always keep Cajun seasoning and cream cheese on hand because this recipe comes together so quickly when everything is stocked. The ingredient list looks long but each piece plays a specific role in building that layered, cheesy flavor.
- 1 lb boneless skinless chicken breasts, cut into bite-sized pieces
- 2 tbsp olive oil
- 2 tbsp Cajun seasoning – I recommend starting with 1 tbsp if your household prefers milder heat and building from there
- 1 tsp smoked paprika
- 1 lb spaghetti
- 4 tbsp unsalted butter
- 4 cloves garlic, minced fresh – Pro tip: watch the garlic closely on medium heat and stir constantly to keep it from browning
- 1/3 cup all-purpose flour
- 3 cups whole milk
- 1 cup chicken broth
- 8 oz cream cheese, softened to room temperature – In my experience, softened cream cheese melts into the sauce without any lumps, cold cream cheese creates clumps
- 2 cups shredded mozzarella cheese, divided (1.5 cups for the sauce, 0.5 cup for the broiled topping) – My preference is to shred your own from a block for the smoothest melt
- 1/2 cup grated Parmesan cheese
- Salt and black pepper to taste
- Red pepper flakes (optional, for extra heat)
Step-by-Step Instructions
I recommend getting your pasta water boiling and your chicken seasoned before anything else. This recipe moves quickly once the skillet gets hot and having both components ready at the same time makes the final toss seamless.
Step 1: Bring a large pot of well-salted water to a boil. Cook spaghetti according to package directions until just al dente. Drain and set aside. The pasta will finish cooking in the sauce so pull it slightly early.
Step 2: Toss the chicken pieces with olive oil, Cajun seasoning, and smoked paprika until evenly coated. Let the seasoned chicken rest for 8 to 10 minutes so the spices absorb. Heat a large skillet over medium-high heat and sear the chicken for 6 to 8 minutes, turning occasionally, until deeply browned and cooked through to 165 degrees F. Do not overcrowd the pan. Cook in batches if needed for a proper sear, not a steam. Remove to a plate and set aside.
Step 3: In the same skillet, reduce heat to medium and melt the butter. Add the minced garlic and stir constantly for about 2 minutes until fragrant but not browned. Sprinkle in the flour and whisk continuously for 1 to 2 minutes to form a smooth roux. The mixture should look pale golden and smell slightly nutty.
Step 4: Gradually pour in the whole milk and chicken broth, whisking constantly to prevent lumps. Bring to a gentle simmer and cook for 3 to 4 minutes until the sauce thickens enough to coat the back of a spoon.
Step 5: Reduce heat to low. Add the softened cream cheese and stir until fully melted and smooth. Add 1.5 cups of the mozzarella and all the Parmesan, stirring until the sauce is creamy and cohesive. Season with salt, black pepper, and red pepper flakes if using. Taste here and adjust the seasoning before adding the pasta.
Step 6: Add the cooked spaghetti and seared chicken to the skillet. Toss well to coat everything evenly in the sauce. Simmer together for 2 to 3 minutes until the pasta is warmed through and fully coated. If the sauce feels too thick, add a small splash of pasta water or broth to loosen it.
Step 7: Sprinkle the remaining 1/2 cup of mozzarella evenly over the top. If your skillet is oven-safe, place it directly under the broiler for 2 to 3 minutes until the cheese is golden and bubbling. If not, transfer to an oven-safe dish first. Watch the broiler closely as it browns within minutes. Garnish with fresh parsley or extra Parmesan and serve immediately.
What to Serve with Creamy Cajun Chicken Spaghetti
The best sides for creamy Cajun chicken spaghetti balance the richness of the sauce with something cool, crunchy, or lightly acidic.
Homemade Cheesy Breadsticks: Warm, cheesy breadsticks are a natural companion to a creamy pasta dish. They are perfect for scooping up any extra sauce left in the bowl. Try these Homemade Cheesy Breadsticks for a crowd-pleasing side that pairs naturally with the garlic mozzarella flavors.
Light Mediterranean Couscous Salad: A bright, herby couscous salad cuts through the richness of the cream sauce with a refreshing citrus vinaigrette. This Light Mediterranean Couscous Salad adds color and a clean contrast to the bold Cajun spice without competing for attention.
Garlic Roasted Vegetables: A sheet pan of roasted vegetables adds fiber and a slight char that works beautifully alongside a rich pasta dinner. These Garlic Roasted Vegetables come together with minimal effort and complement the smoky paprika notes in the chicken.
Broccoli and Mushroom Stir Fry: For a quick vegetable side with some texture, a simple broccoli stir fry is hard to beat. This Broccoli and Mushroom Stir Fry pairs well with the creamy sauce and keeps the overall meal feeling balanced.
Cold Pasta Salad: On warmer nights, a chilled pasta salad served alongside the hot spaghetti creates a satisfying contrast of temperatures and textures. This Cold Pasta Salad is a simple, crowd-friendly option that works well for family dinners.
Storage and Serving Tips
Store leftover creamy Cajun chicken spaghetti in an airtight container in the refrigerator for up to 4 days. The sauce thickens considerably as it cools, which is completely normal and easy to fix when reheating.
To reheat, warm portions in a skillet over medium-low heat with a splash of whole milk or chicken broth, stirring until the sauce loosens back to its original creamy consistency. The microwave works for quick reheating but stir halfway through and add a little liquid to prevent the sauce from seizing up.
For longer storage, cool the pasta completely, portion it into freezer-safe containers, and freeze for up to 2 months. Thaw overnight in the refrigerator and reheat gently in a skillet. I recommend avoiding the broiler step if freezing since remelting the cheese topping fresh gives a much better result.
Frequently Asked Questions
Can I use chicken thighs instead of chicken breasts?
Yes, boneless skinless chicken thighs work well and stay juicier through the searing process. They take roughly the same time to cook through. Rotisserie chicken is also a great shortcut. Simply shred it and add it directly when combining the pasta and sauce.
Why is my cream sauce lumpy?
Lumps usually happen when the cream cheese is added cold or when the milk is poured in too fast. Make sure the cream cheese is fully softened before adding it. Pour the milk and broth in gradually while whisking constantly to build the sauce smoothly.
Can I make this less spicy for kids?
Yes. Reduce the Cajun seasoning to 1 tablespoon and skip the red pepper flakes entirely. The sauce will still have great depth and smokiness from the smoked paprika without the heat. You can also serve the red pepper flakes on the side for adults to add at the table.
Conclusion
Creamy Cajun chicken spaghetti delivers big restaurant-quality flavor with ingredients you likely already have at home. The process is straightforward, the result is bold and satisfying, and it reheats beautifully all week. Give this one a try tonight and see why it earns a spot on the permanent dinner rotation.
Creamy Cajun Chicken Spaghetti
Ingredients
Equipment
Method
- Bring a large pot of well-salted water to a boil. Cook spaghetti until just al dente according to package directions. Drain and set aside.
- Toss chicken with olive oil, Cajun seasoning, and smoked paprika. Let rest 8 to 10 minutes. Sear in a hot skillet over medium-high heat for 6 to 8 minutes until browned and cooked through to 165 degrees F. Cook in batches if needed. Remove and set aside.
- In the same skillet over medium heat, melt butter. Add garlic and stir constantly for about 2 minutes until fragrant. Sprinkle in flour and whisk for 1 to 2 minutes to form a smooth roux.
- Gradually whisk in whole milk and chicken broth, pouring slowly and stirring constantly to avoid lumps. Bring to a gentle simmer and cook for 3 to 4 minutes until slightly thickened.
- Reduce heat to low. Stir in softened cream cheese until fully melted. Add 1.5 cups mozzarella and all the Parmesan, stirring until smooth and creamy. Season with salt, pepper, and red pepper flakes if using.
- Add cooked spaghetti and seared chicken to the skillet. Toss to coat everything evenly. Simmer for 2 to 3 minutes. Add a splash of pasta water or broth if the sauce is too thick.
- Sprinkle remaining 0.5 cup mozzarella over the top. Place under the broiler for 2 to 3 minutes until golden and bubbling. Watch closely. Garnish with fresh parsley or extra Parmesan and serve immediately.
