If you like simple dinners that don't leave the kitchen looking like a disaster zone, this One Pot Creamy Cajun Sausage Pasta is the kind of recipe that quietly saves the day. Everything cooks together in a single pot: the penne, the smoky sausage, and a creamy Cajun-spiced tomato sauce that clings to every piece of pasta. It's comforting, a little bit spicy, and easy enough to pull off on a weeknight when you're already tired.

There's no fancy technique here. Just browning smoked sausage, softening onion and garlic, adding Cajun seasoning and a few pantry staples like chicken broth and crushed tomatoes, then letting the pasta simmer right in the sauce. A splash of heavy cream and some grated Parmesan at the end turn everything silky and rich without feeling over the top. It's the kind of meal you can make once and then almost cook on autopilot next time.

Ingredients for this One Pot Creamy Cajun Sausage Pasta

Here's exactly what you'll need to make this one pot creamy Cajun sausage pasta. Nothing complicated, just a few flavorful basics that work well together.

Penne pasta, uncooked (8 oz) — The shape holds the creamy Cajun sauce nicely. You can use another short pasta if you like, but penne works really well here.
Smoked sausage, sliced into rounds (12 oz) — This brings a lot of flavor with almost no effort. The browning step at the start builds the base of the dish.
Olive oil (1 tbsp) — Just enough to help brown the sausage and soften the onion.
Yellow onion, finely chopped (1 small) — Adds a gentle sweetness and a bit of body to the sauce.
Garlic, minced (3 cloves) — For that unmistakable savory aroma. It cooks quickly, so it goes in after the onion.
Cajun seasoning (1 tbsp) — The main flavor driver. It usually includes paprika, garlic, onion, and a bit of heat.
Smoked paprika (1/2 tsp) — Bumps up the smoky, warm flavor without adding more salt.
Dried oregano (1/2 tsp) — A small touch of herbiness that rounds out the spices.
Salt (1/2 tsp) — Just enough to season the pasta and sauce. You can adjust at the end.
Black pepper (1/4 tsp) — Adds a gentle bite and depth.
Low sodium chicken broth (2 cups) — This is the cooking liquid for the pasta and the base of the sauce.
Canned crushed tomatoes (1 cup) — Brings acidity, color, and a bit of texture to the sauce.
Heavy cream (3/4 cup) — The key to that creamy finish. It softens the spice and makes everything feel cozy.
Grated Parmesan cheese (1/2 cup) — Melts into the sauce and adds a salty, nutty flavor.
Fresh parsley, chopped (1 tbsp) — A simple, fresh finishing touch right before serving.

Instructions

Set aside about half an hour, put on some music or a podcast, and let this one pot creamy Cajun sausage pasta come together step by step.

Warm the pot.
Place a large deep skillet or a wide pot over medium heat and add the olive oil. Give it a minute to warm up so the smoked sausage browns instead of just steaming.
Brown the smoked sausage.
Add the sliced smoked sausage to the pot. Cook for about 4 to 5 minutes, stirring occasionally, until the sausage is lightly browned on the edges. This is where you start building flavor, so let it get a bit of color.
Soften the onion.
Stir in the finely chopped yellow onion. Cook for 3 to 4 minutes, stirring now and then, until the onion softens and turns translucent. It should smell sweet and a little savory.
Add the garlic.
Add the minced garlic and cook for about 30 seconds, stirring constantly. You want it fragrant, not browned. If it starts to color quickly, lower the heat a bit.
Stir in the spices.
Sprinkle in the Cajun seasoning, smoked paprika, dried oregano, salt, and black pepper. Stir well so the sausage and onions are coated evenly. The pot will smell like you're really cooking now.
Pour in the liquids.
Pour in the low sodium chicken broth and the canned crushed tomatoes. Stir to combine and use your spoon to scrape up any browned bits stuck to the bottom of the pot. Those little bits are pure flavor.
Add the pasta.
Add the uncooked penne pasta straight into the pot. Press it down gently with your spoon so most of the pasta is submerged in the liquid. It doesn't have to be perfect; it will soften as it cooks.
Bring to a simmer.
Turn the heat up slightly and bring the mixture to a gentle boil. Once it starts bubbling, reduce the heat to medium-low and cover the pot with a lid.
Cook the pasta.
Let the pasta simmer for 12 to 14 minutes, lifting the lid to stir every few minutes. This helps prevent the penne from sticking to the bottom and makes sure it cooks evenly. By the end, the pasta should be tender and most of the liquid absorbed into a thick, saucy base.
Add the cream.
Reduce the heat to low. Pour in the heavy cream and stir until the sauce looks smooth and creamy, with the pasta coated all over.
Melt in the Parmesan.
Sprinkle the grated Parmesan cheese over the pasta. Stir slowly until the cheese melts into the sauce and everything looks glossy and well combined.
Adjust and finish.
Remove the pot from the heat. Taste a piece of pasta and a bit of sauce. If you think it needs a touch more salt or black pepper, add it now. When you're happy with the flavor, sprinkle the chopped fresh parsley over the top.
Let it rest briefly.
Let the pasta sit for 2 to 3 minutes before serving. The sauce will thicken just a little as it cools, which makes it cling even better to the penne.

Cook and Prep Times

Prep time: 10 minutes
Cook time: 25 minutes
Total time: About 35 minutes
Servings: 4 portions of creamy Cajun sausage pasta

Nutritional information

The values below are an estimate for one serving of this one pot creamy Cajun sausage pasta when the recipe is divided into four portions.

Calories: 640 kcal
Carbohydrates: 55g
Protein: 24g
Fat: 36g
Saturated fat: 17g
Sodium: 1090mg
Fiber: 3g
Sugar: 6g

If you're watching the heat or salt, you can slightly reduce the Cajun seasoning and lean on the smoked paprika and oregano for flavor, then adjust the salt at the very end to taste.

Frequently asked questions

How spicy is this One Pot Creamy Cajun Sausage Pasta?

The spice level mostly depends on your Cajun seasoning and the smoked sausage you use. As written, the dish has a gentle kick but isn't overwhelmingly hot. If you prefer a milder pasta, you can use a Cajun seasoning labeled "mild" and keep the full tablespoon, or simply reduce the Cajun seasoning slightly and taste as you go. The heavy cream and Parmesan help soften the heat, so the sauce still feels balanced.

Can I make this recipe ahead of time?

You can cook the full pot of creamy Cajun sausage pasta ahead and reheat it later, but like most creamy pasta dishes, it's at its best right after cooking. If you do make it in advance, let it cool, then store it in an airtight container in the fridge. When you reheat it gently on the stove over low heat, you can add a small splash of chicken broth or a bit of water to loosen the sauce if it has thickened too much. Stir often so the cream and Parmesan stay smooth.

What kind of pot works best for this one pot pasta?

A large deep skillet or a wide, heavy-bottomed pot works best for this recipe. You want enough surface area for the smoked sausage to brown and enough depth to hold the penne, chicken broth, and crushed tomatoes without boiling over. A nonstick pan or a well-seasoned pot also makes stirring and cleaning up easier, especially since the pasta simmers right in the sauce.