Slow Cooker Cajun Soup

Featured in: Lazy Day Meals

This dish combines russet potatoes, celery, carrots, bell pepper, and fragrant Cajun spices, slow-cooked to a creamy, hearty consistency. Using a slow cooker ensures deep flavors develop over several hours while retaining texture by partially mashing the potatoes. Cream or plant-based milk creates a rich finish, balanced by aromatic herbs and a subtle smoky heat. Garnished with fresh green onions and parsley, this warming bowl suits varied dietary preferences with optional sausage or vegan substitutions.

Perfect for an easy weekday meal, the method involves layering vegetables and seasoning in a slow cooker, simmering until tender, then enriching with dairy or alternatives. The result is an inviting, flavorful dish full of texture and spice, ideal when served with crusty bread or a fresh side.

Updated on Sun, 23 Nov 2025 11:19:00 GMT
Creamy, steamy Slow Cooker Cajun Potato Soup, garnished with green onions, ready to serve and enjoy. Save to Pinterest
Creamy, steamy Slow Cooker Cajun Potato Soup, garnished with green onions, ready to serve and enjoy. | snackandmack.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.

This slow cooker Cajun potato soup has quickly become a family favorite during colder months. The blend of spices and creamy texture always hits the spot.

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 67 hours or on high for 34 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 2030 minutes until heated through.
Step 6:
Taste and adjust seasoning as needed.
Step 7:
Serve hot garnished with green onions and parsley.
A close-up of a steaming bowl of Slow Cooker Cajun Potato Soup, perfect on a chilly evening. Save to Pinterest
A close-up of a steaming bowl of Slow Cooker Cajun Potato Soup, perfect on a chilly evening. | snackandmack.com

My family loves gathering around the table to enjoy this warming soup especially on chilly evenings it always brings comfort and smiles.

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 vegetarian or vegan omit sausage or use plant-based substitute

Nutritional Information

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

Rich, thick Slow Cooker Cajun Potato Soup with visible chunks of potato and vibrant vegetables. Save to Pinterest
Rich, thick Slow Cooker Cajun Potato Soup with visible chunks of potato and vibrant vegetables. | snackandmack.com

This soup is perfect for meal prep and tastes even better the next day enjoy the rich flavors and creamy texture.

Recipe FAQs

Can I make this soup vegan?

Yes, by using vegetable broth and substituting milk and cream with unsweetened plant-based alternatives, you can enjoy a vegan-friendly version.

How do I adjust the spiciness?

Adjust the amount of Cajun seasoning and cayenne pepper based on your heat preference, adding less for mild or more for extra kick.

What can I use instead of andouille sausage?

For a vegetarian option, omit the sausage or replace it with smoked tofu or plant-based sausage alternatives to maintain flavor.

How is the soup thickened?

Partially mashing the potatoes inside the slow cooker creates a creamy texture while keeping some chunks for a satisfying bite.

Can I prepare this dish ahead?

Yes, the flavors deepen when refrigerated overnight. Reheat gently, adding extra broth or milk if it thickens too much.

What are good garnishes for this dish?

Fresh sliced green onions and chopped parsley offer a bright herbal contrast to the rich, spicy flavors.

Slow Cooker Cajun Soup

Tender potatoes and spicy Cajun flavors meld into a rich, comforting slow-cooked dish full of vibrant vegetables.

Prep Time
15 min
Cook Time
360 min
Overall Time
375 min
Recipe by Snack And Mack Ryan Mitchell

Recipe Type Lazy Day Meals

Skill Level Easy

Cuisine Type American, Cajun

Output 6 Serving Size

Dietary Details Vegetarian-Friendly

Ingredient List

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 for vegan option
03 0.5 cup heavy cream or coconut cream for dairy-free

Spices & Seasonings

01 2 teaspoons Cajun seasoning
02 0.5 teaspoon smoked paprika
03 0.5 teaspoon dried thyme
04 0.25 teaspoon black pepper
05 0.25 teaspoon cayenne pepper, optional
06 1 teaspoon salt, or to taste

Optional Additions

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

Steps

Step 01

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

Step 02

Add broth and seasoning: Pour in broth, then add Cajun seasoning, smoked paprika, dried thyme, black pepper, cayenne (if using), and salt. Stir well to combine.

Step 03

Slow cook vegetables: 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 04

Mash potatoes for texture: Use a potato masher or immersion blender to mash some potatoes directly in the slow cooker, leaving chunks for texture.

Step 05

Incorporate dairy and heat through: Stir in milk and cream, then cook uncovered on high for 20 to 30 minutes until heated through.

Step 06

Adjust seasoning: Taste soup and adjust seasoning as necessary.

Step 07

Serve garnished: Ladle soup into bowls and garnish with sliced green onions and chopped parsley.

Equipment Needed

  • Slow cooker
  • Chef’s knife
  • Cutting board
  • Potato masher or immersion blender
  • Ladle

Allergy Info

Double-check every item for known allergies. If unsure, reach out to a healthcare provider.
  • Contains dairy unless substituted with plant-based products.
  • Sausage may contain gluten; verify product labeling if using.

Nutrition Details (each serving)

Nutrient details are offered for reference only. Speak with your doctor for personal health questions.
  • Calorie Count: 285
  • Fat Content: 10 g
  • Carbohydrate: 39 g
  • Proteins: 8 g