Slow Cooker Cajun Soup

Featured in: Weeknight Spoonfuls

This dish combines tender diced potatoes, colorful vegetables, and a distinctive Cajun spice blend, all slowly simmered to develop deep, comforting flavors. The mix includes russet potatoes, onion, celery, carrots, bell pepper, and garlic enriched with smoked paprika, dried thyme, and cayenne for a subtle kick. Creamy milk and cream bring richness, while optional sausage or corn add texture and variety. Perfectly cooked over several hours to meld flavors, finished with fresh green onions and parsley for a satisfying and warming experience.

Updated on Sun, 23 Nov 2025 15:34:00 GMT
Creamy slow cooker Cajun potato soup, garnished and steaming, ready to serve with crusty bread. Save
Creamy slow cooker Cajun potato soup, garnished and steaming, ready to serve with crusty bread. | cookinget.com

A hearty, flavorful soup featuring tender potatoes, vegetables, and Cajun spices, all simmered to perfection in a slow cooker. Perfect for a comforting weeknight meal.

I first served this to my family on a chilly evening, and it quickly became one of our favorite go-to soups for its rich taste and easy preparation.

Ingredients

  • Vegetables: 1.5 lbs (700 g) russet potatoes peeled and diced, 1 medium yellow onion diced, 2 celery stalks diced, 2 medium carrots diced, 1 red bell pepper diced, 3 cloves garlic minced
  • Liquids: 4 cups (1 L) low-sodium chicken or vegetable broth, 1 cup (240 ml) whole milk (or unsweetened plant-based milk for vegan option), 1/2 cup (120 ml) heavy cream (or coconut cream for dairy-free)
  • Spices & Seasonings: 2 tsp Cajun seasoning (store-bought or homemade), 1/2 tsp smoked paprika, 1/2 tsp dried thyme, 1/4 tsp black pepper, 1/4 tsp cayenne pepper (optional for extra heat), 1 tsp salt or to taste
  • Optional Additions: 1 cup (150 g) corn kernels (fresh or frozen), 1 cup (125 g) cooked andouille sausage or smoked sausage sliced (omit for vegetarian), 2 green onions sliced (for garnish), Chopped fresh parsley (for garnish)

Instructions

Step 1:
Add the potatoes onion celery carrots bell pepper garlic corn (if using) and sausage (if using) to the slow cooker.
Step 2:
Pour in the broth and add the Cajun seasoning smoked paprika dried thyme black pepper cayenne (if using) and salt. Stir to combine.
Step 3:
Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours until potatoes and vegetables are tender.
Step 4:
Using a potato masher or immersion blender mash some of the potatoes directly in the slow cooker to thicken the soup leaving some chunks for texture.
Step 5:
Stir in the milk and cream then cook uncovered on high for an additional 20 to 30 minutes until heated through.
Step 6:
Taste and adjust seasoning as needed.
Step 7:
Serve hot garnished with green onions and parsley.
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This soup always brings us together around the table for a warm and satisfying family dinner.

Required Tools

Slow cooker (crockpot), Chefs knife, Cutting board, Potato masher or immersion blender, Ladle

Allergen Information

Contains dairy (milk cream) for dairy-free use plant-based alternatives. Contains possible gluten if sausage is not gluten-free check labels. For a vegetarian or vegan version omit sausage or use a plant-based substitute.

Nutritional Information

Calories 285 Total Fat 10 g Carbohydrates 39 g Protein 8 g per serving

Thick and flavorful, a close-up of slow cooker Cajun potato soup topped with fresh herbs. Save
Thick and flavorful, a close-up of slow cooker Cajun potato soup topped with fresh herbs. | cookinget.com

This soup is a perfect balance of spice and creaminess ideal for any season.

Recipe FAQs

What type of potatoes work best?

Russet potatoes are ideal due to their starchy texture, which helps thicken the soup and absorb flavors well.

Can I make a vegetarian or vegan version?

Yes, substitute the broth with vegetable stock and use plant-based milk and cream alternatives, omitting any meat additions.

How do I adjust the spice level?

Modify the amount of Cajun seasoning and cayenne pepper according to your preference to achieve mild or extra heat.

What is the best way to thicken this dish?

Mash some of the cooked potatoes with a masher or immersion blender inside the cooker to create a creamy, thick texture while leaving chunks for bite.

Can I prepare this in advance?

Yes, this slow-simmered dish can be made ahead of time; flavors often enhance after resting and reheating gently before serving.

Slow Cooker Cajun Soup

A flavorful blend of potatoes, vegetables, and Cajun spices cooked slowly for a warm, hearty dish.

Prep Duration
15 minutes
Time to Cook
360 minutes
Overall Time
375 minutes
Recipe by Sophie Daniels


Skill Difficulty Easy

Cuisine American

Output 6 Portion Count

Diet Preferences Vegetarian Option

What You'll Need

Vegetables

01 1.5 lbs russet potatoes, peeled and diced
02 1 medium yellow onion, diced
03 2 celery stalks, diced
04 2 medium carrots, diced
05 1 red bell pepper, diced
06 3 cloves garlic, minced

Liquids

01 4 cups low-sodium chicken or vegetable broth
02 1 cup whole milk or unsweetened plant-based milk
03 1/2 cup heavy cream or coconut cream

Spices & Seasonings

01 2 teaspoons Cajun seasoning
02 1/2 teaspoon smoked paprika
03 1/2 teaspoon dried thyme
04 1/4 teaspoon black pepper
05 1/4 teaspoon cayenne pepper (optional)
06 1 teaspoon salt, to taste

Optional Additions

01 1 cup corn kernels, fresh or frozen
02 1 cup cooked andouille or smoked sausage, sliced
03 2 green onions, sliced
04 Chopped fresh parsley for garnish

Directions

Step 01

Combine Ingredients: Place potatoes, onion, celery, carrots, bell pepper, garlic, corn (if using), and sausage (if using) into the slow cooker.

Step 02

Add Broth and Seasonings: Pour the broth into the slow cooker and add Cajun seasoning, smoked paprika, dried thyme, black pepper, cayenne pepper (if using), and salt; stir to blend.

Step 03

Slow Cook: Cover and cook on low heat for 6 to 7 hours or on high for 3 to 4 hours, until potatoes and vegetables are tender.

Step 04

Thicken Soup: Mash some potatoes directly in the slow cooker using a potato masher or immersion blender, leaving some chunks for texture.

Step 05

Add Cream and Heat Through: Stir in the milk and cream, then cook uncovered on high for 20 to 30 minutes until thoroughly heated.

Step 06

Adjust Seasoning and Serve: Taste the soup and adjust seasoning as desired; serve hot garnished with green onions and parsley.

Essential Tools

  • Slow cooker (crockpot)
  • Chef's knife
  • Cutting board
  • Potato masher or immersion blender
  • Ladle

Allergy Details

Review all ingredients for allergens. Ask a medical expert when uncertain.
  • Contains dairy; for dairy-free options, substitute with plant-based ingredients.
  • May contain gluten if sausage is not gluten-free; verify product labels.

Nutrition Facts (per portion)

These numbers offer reference only, not medical guidance.
  • Energy Value: 285
  • Fats: 10 g
  • Carbohydrates: 39 g
  • Proteins: 8 g