30-Minute Creamy One Pot Cajun Pasta

A smoky, spicy, and creamy pasta dinner that happens entirely in one pot, from searing the chicken to boiling the noodles. It’s the kind of meal that feels a little special but comes together fast on a Tuesday night.

Tender chunks of chicken and browned slices of andouille sausage mingle with bell peppers and penne in a Cajun-spiced tomato cream sauce. A handful of Parmesan melted in right before serving makes the whole thing silky and rich.

Why This One-Pot Pasta Works

The method is simple: you build layers of flavor in the same pot, then let the pasta cook right in the sauce. Every piece of pasta soaks up the spicy, smoky broth instead of just carrying it on the outside.

Cooking the noodles directly in the liquid also releases starch, which thickens the sauce naturally. You get a velvety texture without needing to make a separate roux or simmer cream for ages.

That spicy kick from the Cajun seasoning is balanced by the cream and Parmesan, so it never overwhelms. You end up with a bowl of pasta that tastes like it took all afternoon but really only needs about half an hour.

Ingredients

• 2 tbsp olive oil: divided, you’ll use some for browning and some for the vegetables
• 12 oz andouille sausage: sliced into 1/4-inch rounds, smoky and fully cooked
• 1 lb boneless skinless chicken breasts: cut into 1-inch chunks, or use thighs for more juiciness
• 1 tbsp Cajun seasoning: use a salt-free blend if you’re watching sodium, or add salt to taste later
• 1 small yellow onion: diced, about 1 cup
• 1 red bell pepper: diced, any color works
• 3 cloves garlic: minced
• 8 oz penne pasta: dry, uncooked; other short shapes work here too
• 1 (14.5 oz) can diced tomatoes: undrained, adds brightness and a little acidity
• 2 cups low-sodium chicken broth: warm or room temperature, to help the pasta cook evenly
• 1/2 cup heavy cream: room temperature, for the creamiest finish
• 1/2 cup grated Parmesan cheese: plus extra for serving
• 2 green onions: sliced, for a fresh finish

Variations and Substitutions

• Swap the protein: Shrimp works beautifully; add it in the last 3 minutes of simmering so it doesn’t overcook. For a vegetarian version, leave out the meat and use drained canned chickpeas and a pinch of smoked paprika.
• Dairy-free alternative: Replace the heavy cream with full-fat canned coconut milk and skip the Parmesan, or use a dairy-free Parmesan-style shred.
• Adjust the heat: Cajun seasoning blends vary quite a bit. If yours is very spicy, start with 2 teaspoons and taste the broth before adding the cream. You can always stir in a pinch more at the end.
• Pasta shapes: Any short, sturdy shape holds up well. Try rotini, fusilli, or medium shells.

If you enjoy this pasta’s smoky depth, you might like our Cajun Shrimp and Grits recipe.

How to Make Creamy One Pot Cajun Pasta

Step 1: Brown the Sausage and Chicken

Warm 1 tablespoon of the olive oil in a large, deep-sided pot or Dutch oven over medium-high heat. Once the oil shimmers, add the 12 oz sliced andouille sausage and cook for about 3 minutes, stirring once or twice, until the edges start to caramelize. Scoop the sausage onto a plate and set it aside.

Add the remaining 1 tablespoon of oil and the 1 lb chicken chunks to the same pot. Sprinkle the chicken with half of the 1 tablespoon Cajun seasoning. Let it sear undisturbed for about 2 minutes, then stir and cook another 3 minutes, until the pieces are just cooked through and lightly browned.

You’ll see a browned layer forming on the bottom of the pot. That’s where a lot of the deep flavor comes from, and we’ll lift it up with the vegetables and broth in the next steps.

Step 2: Soften the Vegetables

Reduce the heat to medium and toss in the diced onion and bell pepper. Cook, stirring often, for about 4 minutes, until the onion turns translucent and the pepper softens slightly. The moisture from the vegetables will help release those browned bits from the pot.

Stir in the 3 cloves minced garlic and the remaining Cajun seasoning. Cook for 30 seconds just until fragrant. Be careful not to let the garlic burn, or the whole dish can turn bitter.

Step 3: Simmer the Pasta in the Sauce

Pour in the 14.5 oz can of undrained diced tomatoes, the 2 cups chicken broth, and the 8 oz dry penne. Stir to combine everything, then bring the liquid to a boil. Reduce the heat to a steady simmer, cover the pot, and cook for 11 to 13 minutes, stirring halfway through.

Check the pasta at the 11-minute mark. You want it tender but still with a little bite, since it will continue to absorb liquid after you take the pot off the heat.

As the pasta cooks, the liquid reduces and thickens into a loose sauce that coats the back of a spoon. That starch released from the penne is what will give the dish its creamy cling without a separate thickener.

Step 4: Stir Through the Cream and Serve

Remove the pot from the heat. Pour in the 1/2 cup heavy cream and add the 1/2 cup Parmesan, along with the reserved sausage. Stir gently until the cheese melts and the sauce turns pale orange and glossy. Let it sit for 2 minutes to thicken slightly.

Spoon the pasta into bowls and scatter the sliced green onions over the top. Serve hot, with extra Parmesan on the side if you like.

A Few Tips for One-Pot Pasta Success

• Cut the chicken evenly: One-inch chunks cook at roughly the same rate, so you won’t end up with dry pieces next to underdone ones.
• Stir once during simmering: Pasta loves to stick to the bottom, especially in a starchy sauce. A quick stir halfway through prevents scorching without disrupting the cooking time.
• Warm your cream and broth: Room temperature liquids blend into the hot pot smoothly and won’t cause the sauce to seize or curdle.
• Taste before salting: The Cajun seasoning, sausage, and canned tomatoes all carry salt, so wait until after you add the Parmesan, then taste and adjust as needed.

Simmer time will vary slightly depending on the pasta shape you choose. Here is a quick guide:

Storing and Reheating Leftovers

• Refrigerate: Store in an airtight container for up to 3 days. The pasta will absorb more sauce as it sits, so it will be thicker when cold.
• Reheating: Warm gently in a pot over low heat with a splash of milk or broth to loosen the sauce. Stir often so the bottom doesn’t scorch.

What to Serve with Cajun Pasta

A simple green salad with a lemon vinaigrette cuts through the richness of the cream and sausage. Crusty bread or garlic toast is great for scooping up any leftover sauce at the bottom of the bowl. If you want a cooked vegetable on the side, roasted green beans with a little salt and pepper work without adding another heavy element.

Frequently Asked Questions

Is this pasta very spicy?

It has a noticeable warmth but isn’t overwhelmingly hot. The cream and Parmesan mellow the Cajun seasoning significantly, so the final dish leans more toward smoky and savory than fiery.

Can I use a different kind of sausage?

Yes, any fully cooked smoked sausage works well. Kielbasa or a smoked turkey sausage will give you a similar texture and depth, just with a slightly different spice profile.

Do I really need to use heavy cream?

Half-and-half can substitute in a pinch, but the sauce will be thinner. Avoid using milk, as it can curdle when it hits the hot, acidic tomato base.

My pasta turned out a little too soft. What went wrong?

It likely cooked a minute or two longer than needed. Remember that the pasta continues to cook off the heat, especially in the hot pot. Next time, check it at the minimum time, and pull the pot when the penne is just shy of your ideal texture.

Creamy One Pot Cajun Pasta Recipe

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Prep Time 10 minutes mins

Cook Time 20 minutes mins

Total Time 30 minutes mins

Servings: 4 servings

Calories: 540

Ingredients Method Notes

Ingredients

  

• 2 tbsp olive oil
• 12 oz andouille sausage
• 1 lb boneless skinless chicken breasts
• 1 tbsp Cajun seasoning
• 1 small yellow onion
• 1 red bell pepper
• 3 cloves garlic
• 8 oz penne pasta
• 1 (14.5 oz) can diced tomatoes
• 2 cups low-sodium chicken broth
• 1/2 cup heavy cream
• 1/2 cup grated Parmesan cheese
• 2 green onions

Method

 

1. Brown the sliced sausage in 1 tablespoon of oil, set aside. Sear the chicken chunks with half the Cajun seasoning in the remaining oil, then remove.
2. Cook the onion and bell pepper in the same pot until softened. Add the garlic and remaining seasoning, cook briefly.
3. Stir in the tomatoes, broth, and uncooked penne. Bring to a boil, then simmer covered for 11 to 13 minutes, stirring once.
4. Remove from heat, stir in the cream, Parmesan, and reserved sausage. Let sit for 2 minutes, then serve with green onions.

Notes

The sauce will continue to thicken as it cools, so letting the pot rest off the heat for a couple of minutes gives you that clingy, creamy consistency. If the pasta seems too dry after sitting, stir in a splash of warm broth or milk when reheating.