25-Minute Cajun Pasta Salad
Cajun pasta salad is the side dish that shows up at a cookout and gets scraped clean first. Smoky andouille sausage, crisp bell peppers, and tender pasta get tossed in a creamy, tangy dressing with a real Cajun kick.
It works warm or cold, holds up beautifully in the fridge, and takes about 25 minutes from start to finish. If you need a dish that actually improves after sitting for a while, this one has your back.
What Makes This Pasta Salad So Good
The dressing carries the whole thing. A mix of mayo, Creole mustard, a splash of vinegar, and a generous spoonful of Cajun seasoning makes it creamy, bright, and just spicy enough that you notice it without needing a glass of milk.
I keep coming back to this version because it tastes layered, not like a mound of mayo. The andouille adds smoke and crisp edges, the bell pepper and celery give crunch, and the pasta soaks up all that goodness without turning soft.
Ingredients
- 8 oz rotini pasta: any short shape works, like penne or farfalle
- 8 oz andouille sausage: sliced into thin rounds
- 1 red bell pepper: diced small
- 1 green bell pepper: diced small
- 2 celery ribs: diced small
- ¼ cup diced red onion
- 2 green onions: thinly sliced, white and green parts
- ½ cup mayonnaise: use a brand you like the taste of
- 2 tbsp Creole mustard: or whole-grain mustard in a pinch
- 1 tbsp apple cider vinegar
- 1 ½ tbsp Cajun seasoning: check for salt, so you can adjust later
- ½ tsp garlic powder
- Salt and black pepper: to taste
Variations and Swaps
- Sausage swap: smoked sausage or chorizo work, but andouille gives the most authentic smoke and heat
- Vegetarian: skip the sausage and add 1 cup of drained canned black-eyed peas or kidney beans
- Pasta shape: any short, ridged pasta grabs the dressing well; shells, campanelle, or rotelle are great choices
- Spice level: for less heat, use smoked paprika instead of Cajun seasoning, or cut the amount to 1 teaspoon
- Dairy-free: swap the mayo for a vegan mayo, and use a mustard that is dairy-free
If you like this dressing, it also works on a simple chicken pasta salad or drizzled over a shrimp po’ boy.
How to Make Cajun Pasta Salad
Step 1: Boil the Pasta
Bring a large pot of salted water to a boil and cook the 8 oz rotini for 10 minutes, until al dente. Drain and rinse under cold water until the pasta feels cool to the touch, then let it drain completely.
Rinsing is important here; it stops the cooking, washes off excess starch, and keeps the pasta from sticking together later. The pasta should be tender but still have a little bite—overcooking it now means it will turn mushy once it sits in the dressing.
Step 2: Sear the Sausage
While the pasta cooks, set a skillet over medium-high heat and add the sliced 8 oz andouille. Cook for about 4 to 5 minutes, stirring once or twice, until the rounds pick up dark brown edges and a bit of char.
You are not cooking it through from raw; you are adding texture and deepening the smoky flavor. Those crispy bits are what make this salad taste like more than just pasta with dressing. Transfer the sausage to a plate and let it cool for a few minutes.
Step 3: Whisk the Dressing
In a large bowl, whisk together the ½ cup mayo, 2 tbsp Creole mustard, 1 tbsp apple cider vinegar, 1 ½ tbsp Cajun seasoning, and ½ tsp garlic powder until smooth. Taste it before adding any salt—Cajun seasoning often contains plenty, so you may not need much. Add a few grinds of black pepper and adjust to your liking.
The dressing should feel tangy, creamy, and carry a slow heat that builds softly. If it seems too thick, add 1 tsp of water at a time until it reaches a pourable consistency that will coat the pasta easily.
Step 4: Toss and Serve the Salad
Add the cooled pasta, seared sausage, diced red and green bell peppers, celery, red onion, and most of the green onions to the bowl with the dressing. Toss for about 1 minute, scraping the bottom, until every piece is glossy and well coated.
The dressing will look a little loose at first, but as it sits, the pasta absorbs it and everything tightens up. Serve right away if you are in a hurry, or let it sit at room temperature for 5 minutes. For bigger flavor, refrigerate it for 30 minutes before serving, then scatter the remaining green onions on top.
Small Tips That Make a Difference
- Don’t skip the mustard. Creole mustard brings a tangy, almost horseradish-like bite that keeps the dressing from tasting flat.
- Toast the Cajun seasoning in the dry skillet for 30 seconds before adding it to the dressing if you want the spices to bloom and taste deeper.
- The salad tightens up as it chills. Before serving leftovers, stir in a spoonful of mayo or a splash of milk to bring the creaminess back.
- If you like extra crunch, toss in half a cup of toasted pecans or celery seeds right before serving.
Storing Leftover Cajun Pasta Salad
Refrigerate any leftovers in a sealed container for up to 4 days. The flavor actually gets better after a day, making this a solid make-ahead option. Serve it cold or let it sit on the counter for 15 minutes to take the chill off. There is no need to reheat.
What Goes Well With This Salad
Smoky pasta salad pairs naturally with grilled foods. Set it next to blackened chicken thighs rubbed with paprika and cayenne, and you get a hot and cold contrast that keeps the plate interesting. It also stands up to a pile of ribs or a fat burger, cutting through richness with that vinegar and mustard tang.
For something lighter, spoon it over a bed of chopped romaine and call it a main course.
Frequently Asked Questions
Is this pasta salad very spicy?
It carries a mild to moderate kick from the Cajun seasoning and the andouille. If you prefer a gentler heat, use plain smoked sausage and cut the seasoning down to 1 teaspoon.
The dressing seems too thick. How do I thin it?
Add a splash of milk or buttermilk, 1 tablespoon at a time, and whisk until it reaches a creamy but pourable consistency. The pasta will still soak it up just fine.
Can I use homemade Cajun seasoning?
Yes, a blend of 2 tsp paprika, 1 tsp garlic powder, 1 tsp onion powder, 1 tsp dried oregano, 1 tsp dried thyme, and ½ tsp cayenne makes a good substitute for the 1 ½ tablespoons needed here.
Can I swap the mayo for Greek yogurt?
You can, but the dressing will be tangier and much less creamy. If you go that route, consider mixing half yogurt and half mayo for a better texture.
Cajun Pasta Salad Recipe
Ingredients
Method
- Bring a pot of salted water to a boil and cook rotini for 10 minutes until al dente. Drain and rinse under cold water, then drain well.
- While the pasta cooks, sear the sliced sausage in a skillet over medium-high heat for 4 to 5 minutes until browned and crisp. Transfer to a plate to cool.
- In a large bowl, whisk together mayo, mustard, vinegar, Cajun seasoning, garlic powder, salt, and pepper until smooth.
- Add the pasta, sausage, bell peppers, celery, red onion, and most of the green onions to the dressing. Toss for 1 minute until everything is coated. Serve now or chill for later; top with remaining green onions.
