Step 4: Slow Cook the Soup

Cover the slow cooker with the lid.

Cook:

Low heat: 6–7 hours
or
High heat: 3–4 hours

The soup is ready when:

• The potatoes are tender.
• The corned beef is soft.
• The flavors have blended together.

Cooking slowly allows the sauerkraut, meat, and seasonings to create a rich, savory broth.

Step 5: Thicken the Soup

About 20–30 minutes before serving, prepare the thickener.

In a small bowl, mix:

• Flour
• Water or broth

Whisk until smooth.

Slowly stir this mixture into the soup.

This helps create a thicker, creamier texture without forming lumps.

Let the soup continue cooking until it slightly thickens.

Step 6: Add the Cream and Cheese

Reduce the slow cooker heat to low.

Add:

• Heavy cream
• Softened cream cheese
• Shredded Swiss cheese

Stir gently until the cheese melts completely.

The soup should become smooth, creamy, and rich.

Avoid boiling after adding dairy because high heat can cause the cream to separate.

Step 7: Adjust the Flavor

Taste the soup before serving.

Depending on your preference, you can add:

• More black pepper for spice
• More Dijon mustard for tang
• More Swiss cheese for richness
• A splash of broth if it is too thick

Remember that corned beef and sauerkraut already contain salt, so add extra salt carefully.

Step 8: Serve the Soup

Remove the bay leaf before serving.

Ladle the creamy Reuben soup into bowls.

Top with:

• Extra Swiss cheese
• Fresh parsley
• Crispy rye bread cubes
• A small drizzle of Thousand Island dressing

For the ultimate Reuben experience, serve it with toasted rye bread on the side for dipping.

Tips for the Best Slow Cooker Creamy Reuben Soup

Use quality corned beef

The corned beef is the main flavor of the soup. Leftover homemade corned beef works especially well.

Drain sauerkraut properly

Too much liquid can make the soup overly sour and thin.

Add dairy at the end

Cream and cheese should be added near the end to keep the soup smooth.

Cut potatoes evenly

Small, equal pieces cook better and create a consistent texture.

Do not rush the cooking time

The slow cooker develops a deeper flavor than quick cooking.

Flavor Variations

Extra Cheesy Reuben Soup

Add more Swiss cheese or mix in a little cheddar for extra richness.

Low-Carb Version

Replace potatoes with cauliflower florets.

Spicy Reuben Soup

Add crushed red pepper flakes or a little hot sauce.

Bacon Reuben Soup

Add crispy bacon pieces for a smoky flavor.

Vegetable Version

Add celery, carrots, or mushrooms for extra texture.

Storage and Reheating

Store leftover soup in an airtight container in the refrigerator for up to 4 days.

To reheat:

• Warm slowly on the stove over medium-low heat.
• Stir frequently.
• Add a splash of broth or milk if the soup becomes too thick.

Avoid boiling while reheating because the cream and cheese may separate.

This soup can also be frozen, although dairy-based soups may slightly change texture after thawing. For best results, freeze before adding the cream and cheese, then add them when reheating.

Final Thoughts

Slow Cooker Creamy Reuben Soup is a delicious way to enjoy the flavors of a classic Reuben sandwich in a cozy bowl. With tender corned beef, tangy sauerkraut, melted Swiss cheese, and a rich creamy broth, it is a satisfying meal that feels both familiar and unique.

The slow cooker does most of the work, allowing the ingredients to slowly blend into a comforting soup that is perfect for sharing with family and friends. Whether you are a longtime Reuben fan or simply looking for a hearty homemade soup, this recipe brings classic deli flavors to your dinner table in a warm and delicious way.