Creamy Slow Cooker Leek and Potato Soup with Cantal Cheese Tips, FAQ & printable recipe

Tips for success

For a more complex flavor profile, consider sautéing the leeks in a small amount of butter before adding them to the slow cooker, though this step is optional.

The addition of fresh herbs like thyme or chives can also brighten the final dish when sprinkled on top just before serving. Always taste the soup after blending and adjust the seasoning with salt or pepper as needed.

If the soup appears too thick after blending, add a splash of warm water or vegetable broth until the desired consistency is achieved. The texture of the soup will naturally thicken as it cools, so keep this in mind if preparing it in advance.

The Cantal cheese can be replaced with Gruyère or even a sharp white Cheddar if those varieties are more readily available in the pantry.

Variations

• Herb-Infused Version: Add two sprigs of fresh thyme or a bay leaf to the slow cooker during the cooking process. Remove the stems before blending to infuse the soup with a subtle, woody aromatic note.
• Roasted Garlic Addition: Incorporate three cloves of roasted garlic during the blending phase to add a deep, sweet, and savory dimension that complements the mild flavor of the leeks perfectly.

Storage and make-ahead

Fridge

Store in an airtight container for up to 3 days.

Freezer

Freeze in a freezer-safe container for up to 2 months. Thaw in the refrigerator overnight before reheating.

Reheat

Reheat on the stovetop over medium-low heat, stirring frequently until steaming hot throughout.

Transfer any leftover soup to an airtight container once it has cooled to room temperature. It is important to ensure the soup cools for no longer than two hours before placing it in the refrigerator to maintain food safety and quality.

Properly stored, the soup will remain fresh for up to three days when kept in the coldest part of the refrigerator.

This soup is an excellent candidate for making ahead, as the flavors often meld and improve after resting in the refrigerator overnight.

Prepare the soup as directed, allow it to cool completely, and store it in the refrigerator. When ready to serve, simply reheat the desired portion on the stovetop over low heat, stirring occasionally until it is warmed through.

Serving ideas

Serve this soup hot in pre-warmed bowls to ensure the Cantal cheese melts properly upon contact. Pairing the soup with a slice of crusty, toasted sourdough bread or a light green salad creates a complete and satisfying meal. The creamy texture of the soup makes it a perfect starter or a main course for a casual dinner.

The presentation can be enhanced by drizzling a tiny amount of high-quality olive oil or adding a few fresh chives over the melted cheese before bringing the bowls to the table. Because the soup is quite rich, a simple side dish with a crisp acidity helps to balance the flavors and provides a pleasant contrast to the velvety potato base.

Frequently asked questions

Recipe card

Creamy Slow Cooker Leek and Potato Soup with Cantal Cheese

Prep 10 minCook 4 hTotal 4 h 10 minServes 4

Ingredients

• 4 medium russet potatoes, peeled and chopped
• 3 large leeks, white and light green parts, sliced
• 2 cubes vegetable bouillon
• 1/4 tsp ground nutmeg
• 4 cups water
• 1/2 cup Cantal cheese, crumbled

Instructions

1. Place the chopped potatoes and sliced leeks into the slow cooker. Sprinkle the crumbled vegetable bouillon and ground nutmeg over the vegetables, then pour in the water.
2. Cover the slow cooker and set to high. Cook for 4 hours until the potatoes are fork-tender and the leeks have completely softened into the liquid.
3. Use an immersion blender to puree the soup directly in the slow cooker until smooth and velvety. Ladle the hot soup into bowls and garnish with crumbled Cantal cheese.

Contains: milk

Estimated nutrition per serving

Calories

280

Protein

6.5 g

Carbohydrates

38 g

Fat

12 g

Fiber

4.5 g

Sugar

2.5 g

Sodium

750 mg

Automatic estimate from the ingredient list, not laboratory-verified.