
This hearty Cajun potato soup brings together the bold flavors of Louisiana cuisine with the comfort of a classic potato soup. The combination of spicy andouille sausage, tender potatoes, and a rich, creamy base creates a soul-warming dish that's perfect for weeknight dinners or weekend gatherings.
I first created this soup on a chilly autumn evening when I was craving something with a kick. After one spoonful, my family declared it an instant favorite, and it's now our go-to comfort food whenever temperatures drop or we need a taste of Southern comfort.
Ingredients
- Andouille sausage: A traditional Cajun smoked pork sausage that adds authentic flavor and a spicy kick. Look for sausage with visible spices and a firm texture.
- Cajun seasoning: The backbone of flavor in this dish. Quality Cajun seasoning should have a complex blend of herbs and spices.
- Russet potatoes: Their high starch content helps thicken the soup naturally while maintaining their shape. Choose firm potatoes without green spots.
- Heavy whipping cream: Creates the luxurious texture that makes this soup so satisfying. Use full-fat for the best results.
- Mild cheddar cheese: Adds richness and depth without overpowering the Cajun spices. Freshly grated melts much better than pre-shredded.
- Fresh vegetables: The holy trinity of Cajun cooking—onions, celery, and bell peppers—provides the aromatic foundation.
Step-by-Step Instructions
- Brown the Sausage:
- Heat vegetable oil in a large pot over medium heat until shimmering. Add the sliced andouille sausage and cook for 3-4 minutes, stirring occasionally until each piece develops a beautiful caramelized crust. This step is crucial as it releases the smoky oils from the sausage that will flavor the entire soup. Remove sausage and set aside while keeping all those flavorful bits in the pot.
- Sauté the Holy Trinity:
- Add diced onion, celery, and red bell pepper to the same pot with the sausage drippings. Cook over medium heat for 5-8 minutes, stirring frequently until the vegetables soften and the onions become translucent. Add minced garlic during the last minute, being careful not to burn it as this can create bitterness. The vegetables should be soft but not browned.
- Build the Soup Base:
- Sprinkle in the Cajun seasoning, salt, black pepper, paprika, and cayenne directly onto the vegetables, stirring to coat everything evenly. This brief toasting of the spices releases their essential oils and intensifies their flavor. Pour in the chicken broth and add the cubed potatoes, stirring to combine. Reduce the heat to a gentle simmer and cook uncovered for 20-25 minutes, or until you can easily pierce the potatoes with a fork.
- Create the Creamy Finish:
- Return the browned sausage to the pot, then pour in the heavy cream and sprinkle in the shredded cheddar cheese. Simmer gently for another 5 minutes, stirring occasionally to help the cheese melt smoothly into the soup. The soup will thicken slightly as it cooks. Taste and adjust seasonings if needed before serving garnished with fresh chopped parsley.

The andouille sausage is truly the star of this recipe. I discovered its magic on a trip to New Orleans years ago, and I've been incorporating it into my cooking ever since. The particular way it infuses the broth with smoky, spicy notes creates a depth that's impossible to achieve with other ingredients. My family jokes that they can tell my mood by how much cayenne I add to this soup!
Spice Level Management
Controlling the heat in this Cajun potato soup is entirely in your hands. For a milder version that everyone at the table can enjoy, reduce the cayenne pepper and use a more subdued Cajun seasoning blend. For heat lovers, increase these elements and consider using a spicier andouille sausage variety. Remember that the cream and cheese help temper the spice, creating a balanced flavor profile even with added heat. The beauty of this recipe is how easily it adapts to your personal spice tolerance while maintaining its authentic Cajun character.
Make-Ahead Options
This soup actually improves with time, making it perfect for meal planning. Prepare it a day in advance and store in the refrigerator to allow the flavors to meld together overnight. When reheating, do so gently over medium-low heat, stirring occasionally to prevent scorching. If the soup has thickened too much in storage, simply add a splash of chicken broth or cream to reach your desired consistency. The convenience of having this waiting in your refrigerator after a long day makes the initial cooking time worthwhile.

Serving Suggestions
Turn this soup into a complete meal by serving it with warm, crusty French bread for dipping. The contrast between the crisp bread exterior and the creamy soup creates a textural experience that elevates the dish. For a lighter accompaniment, a simple side salad with vinaigrette provides a refreshing counterpoint to the rich soup. If you’re hosting a gathering, consider serving this soup in bread bowls for an impressive presentation that requires minimal extra effort. The bread soaks up the flavorful broth while adding another dimension to the meal.
Frequently Asked Questions
- → Can I use a different type of sausage?
Yes, you can substitute andouille sausage with kielbasa, smoked bratwurst, or other smoked sausages. However, the level of spiciness may vary depending on your choice.
- → What if I don't have Cajun seasoning?
You can make your own Cajun seasoning using pantry staples like paprika, cayenne pepper, salt, black pepper, and garlic powder. Adjust the spice level to your preference.
- → Can I freeze Cajun potato soup?
Absolutely! Cool the soup to room temperature, then store it in freezer-safe containers. It can be frozen for up to 2-3 months. Thaw in the refrigerator before reheating.
- → What kind of potatoes work best?
Russet potatoes are ideal due to their texture and ability to absorb flavors. You can also use Yukon gold or red potatoes if preferred.
- → How can I make the soup less spicy?
To reduce the heat, use less cayenne pepper, paprika, and Cajun seasoning, and choose a milder sausage instead of andouille.
- → Can the soup be made dairy-free?
Yes, substitute the heavy cream with coconut cream or a plant-based alternative, and use dairy-free cheese or omit the cheese altogether.