One Pot Cajun Chicken Pasta Recipe: Spicy Cream Sauce in One Pan

This one-pot Cajun chicken pasta delivers bold flavors without the cleanup. The spicy, creamy sauce comes together in a single pan, making it ideal for busy weeknights.

I developed this method to maximize flavor while minimizing effort. The chicken cooks directly in the sauce, absorbing all the Cajun spices and rich creaminess as the pasta finishes.

What you get is tender chicken pieces, perfectly cooked pasta, and a velvety sauce with just the right amount of heat. Every bite is packed with smoky, spicy, and creamy notes.

From start to finish, this dish takes about 30 minutes and leaves you with just one pot to clean.

Ingredients for One Pot Cajun Chicken Pasta

Pantry staples and fresh veggies make this dish sing with spicy creaminess.

The Cajun seasoning is non-negotiable here. Tony Chachere’s is my go-to (grab it at Walmart or any grocery store), but any blend with cayenne, paprika, and garlic works. The chicken should be uniform in size—cut into 1-inch strips so everything cooks evenly. For the pasta, penne holds the sauce beautifully, but rotini or rigatoni work too.

No heavy cream? Whole milk plus extra butter gets you close (not as rich, but still good). Out of Cajun seasoning? 1 tbsp paprika + 1 tsp each garlic powder, onion powder, cayenne, and black pepper. Chicken broth can be swapped for vegetable broth in a pinch. The bell pepper adds sweetness to balance the heat—skip it only if you must.

Leftovers keep 3-4 days in the fridge, but the pasta soaks up sauce over time. Freezes for 2 months (though the cream might separate slightly). Reheat gently with a splash of broth or water to loosen the sauce.

Step-by-Step Instructions for One Pot Cajun Chicken Pasta

Everything comes together in one pan for this flavor-packed dish.

Step 1: Sear the Seasoned Chicken

Heat a large, deep skillet or Dutch oven over medium-high heat. Add the 2 tbsp Butter and let it melt until it stops foaming. Pat the 1.5 lb Chicken Breast strips dry, then toss them with 2 tbsp Cajun Seasoning, 1 tsp Salt, and 0.5 tsp Black Pepper until evenly coated.

Add the chicken to the hot pan in a single layer, working in batches if needed. Sear for 3-4 minutes per side until golden brown and just cooked through. The Cajun seasoning should create a fragrant, slightly crispy crust. Remove the chicken to a plate and set aside.

Step 2: Sauté the Aromatic Vegetables

In the same skillet, add the diced 1 whole Onion and 1 whole Red Bell Pepper. Cook over medium heat for 4-5 minutes, stirring occasionally, until the vegetables soften and the onion becomes translucent.

Add the minced 3 cloves Garlic Cloves and cook for 30 seconds until fragrant. Be careful not to let the garlic burn—it should smell sweet and pungent, not bitter. This builds the flavor base for your sauce.

Step 3: Build the Creamy Cajun Sauce

Sprinkle the 2 tbsp All-Purpose Flour over the vegetables and stir to combine. Cook for 1 minute to remove the raw flour taste. Slowly pour in the 2 cups Chicken Broth while stirring constantly to avoid lumps.

Bring the mixture to a simmer, then stir in the 1.5 cups Heavy Cream. Let it cook for 2-3 minutes until the sauce begins to thicken slightly. It should coat the back of a spoon but still be pourable.

Step 4: Cook the Pasta and Finish the Dish

Add the 8 oz Penne Pasta to the skillet, stirring to ensure it’s fully submerged in the sauce. Reduce the heat to medium-low, cover, and simmer for 10-12 minutes, stirring occasionally, until the pasta is al dente and most of the liquid is absorbed.

Return the seared chicken to the skillet along with any accumulated juices. Stir in the 0.5 cup Parmesan Cheese and cook for an additional 2 minutes until the cheese is melted and everything is heated through.

Step 5: Garnish and Serve

Remove from heat and let it sit for 2 minutes to allow the sauce to thicken further. Sprinkle with the 0.25 cup Green Onions for a fresh, vibrant finish. The pasta should be creamy and coated in the rich, spicy Cajun sauce, with tender chicken distributed throughout.

Serve immediately while hot. The sauce will continue to thicken as it cools, so if it becomes too thick, stir in a splash of chicken broth to loosen it.

Common Mistakes When Making Perfect Results

Overcrowding the Pan

Never dump all the chicken in at once. I sear in 2 batches to avoid steaming the meat instead of browning it. Crowding lowers the pan temperature, creating a sad, gray, boiled effect rather than that beautiful Cajun crust. 🔥

Undercooking the Flour

After adding the flour, cook it for the full 1 minute while stirring. This removes the raw taste and creates a proper roux base for your sauce. Skipping this step leaves a chalky aftertaste that ruins the creamy finish.

Using Wrong Pasta

Short, sturdy shapes like penne or rotini work best. Avoid long pasta like spaghetti—it won’t hold the thick sauce properly. I’ve tried linguine before and ended up with a sad, clumpy mess.

Boiling the Sauce

Keep the heat at medium-low when adding the cream. A rolling boil will cause the sauce to separate or curdle. Gentle simmering is key for that velvety texture we all love.

Skipping the Rest

Let the dish sit for 2 minutes off heat before serving. This allows the sauce to thicken slightly and the flavors to meld together. Serving immediately makes it thinner than intended.

Over-Salting Early

The Cajun seasoning and parmesan already add saltiness. I taste after adding the cheese and adjust then. You can always add more, but you can’t take it out. 💡

Frequently Asked Questions