Irresistible Reuben Soup: Creamy Comfort in Every Spoonful!
Why You’ll Love This Recipe
I will never forget the first time I tried to turn a Reuben sandwich into a soup. It was a disaster. I just dumped corned beef, sauerkraut, and Swiss cheese into some broth and hoped for the best. The cheese turned into a rubbery blob, and the broth was watery and sad. My family politely ate a few spoonfuls before asking if we could order pizza.
That failure taught me everything I needed to know. To get that perfect, velvety texture, you have to treat each ingredient with respect. The key is building a proper roux and melting the Swiss cheese in at the very end, off the heat. The result is a soup that tastes like every bite of a perfectly grilled Reuben, but in a warm, comforting bowl.
This Irresistible Reuben Soup: Creamy Comfort in Every Spoonful! is the soup I make on cold, rainy days when we all need a hug in a bowl. It is rich without being heavy, tangy from the sauerkraut, and deeply savory from the corned beef. If you love a classic Reuben, you will absolutely adore this soup. For more on the history of this iconic sandwich, you can read about the Reuben sandwich on Wikipedia.
Ingredients
- 2 tablespoons unsalted butter
- 1 medium yellow onion, diced
- 2 cloves garlic, minced
- 1/4 cup all-purpose flour
- 4 cups low-sodium beef broth
- 1 cup whole milk
- 1 cup heavy cream
- 1 pound cooked corned beef, chopped into small bite-sized pieces
- 1 1/2 cups sauerkraut, drained and squeezed dry
- 2 cups shredded Swiss cheese
- 1 tablespoon Dijon mustard
- 1 teaspoon caraway seeds (optional but traditional)
- Salt and freshly ground black pepper to taste
- Fresh parsley or chives for garnish
Step-by-Step Directions
- Get your biggest, heaviest pot out of the cabinet. A Dutch oven is perfect here. Place it over medium heat and drop in the butter. Let it melt completely and start to foam just a little bit.
- Toss in the diced onion. Stir it around and let it cook for about 5 minutes. You want the onions to turn soft and translucent, like they are sweating in a steam room. Do not let them brown. When they smell sweet, add the minced garlic and stir for another 30 seconds until it is fragrant.
- Sprinkle the flour over the onion and garlic. Stir constantly with a wooden spoon for about 2 minutes. This is your roux. It will look like a thick, golden paste. Keep stirring until it smells nutty and toasty. This step is crucial because it thickens the soup and prevents a raw flour taste.
- Slowly pour in the beef broth while whisking vigorously. I use a whisk here to make sure there are no lumps. The mixture will thicken almost immediately. Keep whisking until it is smooth and begins to bubble gently.
- Reduce the heat to low. Pour in the milk and heavy cream, stirring gently. Let the soup come to a very gentle simmer. You will see tiny bubbles around the edges of the pot. Do not let it boil hard, or the dairy could curdle.
- Add the chopped corned beef and the drained sauerkraut. Stir everything together. Let the soup simmer gently for about 10 minutes. The flavors will meld together, and your kitchen will smell like a deli.
- Now for the magic. Remove the pot from the heat completely. Let it sit for one minute. Then, gradually sprinkle in the shredded Swiss cheese while stirring. The residual heat will melt the cheese into a silky, smooth ribbon. If you add the cheese over direct heat, it will get stringy and grainy.
- Stir in the Dijon mustard and caraway seeds. Taste the soup and add salt and pepper as needed. Remember that corned beef and sauerkraut are already salty, so go easy on the salt at first.
- Ladle the soup into bowls. Garnish with a sprinkle of fresh parsley or chives. Serve immediately while it is hot and creamy.
Pro Tips for Success
The single most important tip for this Irresistible Reuben Soup: Creamy Comfort in Every Spoonful! is to drain and squeeze the sauerkraut very well. If you skip this step, your soup will be watery and sour in a bad way. I use a clean kitchen towel to wring out every last drop of brine.
Do not boil the soup after you add the dairy or the cheese. High heat will cause the proteins to separate, leaving you with a grainy, broken soup. Low and slow is the way to go. For more on how dairy reacts to heat, check out this article on curdling on Wikipedia.
If you want a thicker soup, let it simmer uncovered for an extra 5 minutes before adding the cheese. The evaporation will concentrate the flavors and thicken the broth naturally.
Servings and Timing
This recipe makes about 6 generous servings. The total prep time is about 15 minutes, and the cook time is about 25 minutes. So in under an hour, you can have a steaming bowl of Irresistible Reuben Soup: Creamy Comfort in Every Spoonful! on the table. It is perfect for a weeknight dinner when you want something special but do not have all day.
Variations and Substitutions
If you want to lighten this up, you can swap the heavy cream for half-and-half or even whole milk. The soup will be a little less rich but still delicious. For a gluten-free version, use a gluten-free all-purpose flour blend in the roux. It works perfectly.
You can use leftover corned beef from a St. Patrick’s Day dinner, or buy pre-cooked corned beef from the deli counter. If you are feeling ambitious, you can even use homemade pastrami. For a vegetarian take, swap the beef broth for a rich mushroom broth and use smoked tofu or tempeh in place of the corned beef. It will not taste exactly the same, but it will be a fantastic soup in its own right.
What to Serve With This
This soup is a meal on its own, but it loves a good sidekick. I always serve it with crusty rye bread slathered with butter. The rye bread echoes the flavors of the classic Reuben sandwich perfectly.
For a complete Irish-inspired meal, try serving this soup alongside my homemade Corned Beef Hash. It is another great way to use leftover corned beef. And if you want something green on the side, my Roasted Cabbage Wedges are a simple and delicious pairing.
Storage and Reheating
This soup stores beautifully in the refrigerator for up to 4 days. Let it cool completely, then transfer it to an airtight container. The soup will thicken as it sits because the starch from the flour continues to absorb liquid.
To reheat, warm it gently on the stovetop over low heat. Add a splash of milk or broth to loosen it up if needed. Do not use the microwave if you can help it, as it can make the cheese separate. Stir frequently while reheating to keep the texture smooth. I do not recommend freezing this soup because the dairy and cheese can become grainy when thawed.
FAQs
Can I use a different type of cheese?
You can, but Swiss cheese is really the star here. Its nutty, slightly sweet flavor is what makes a Reuben taste like a Reuben. Gruyere is a fantastic substitute if you want something a little more sophisticated. Avoid using cheddar or mozzarella, as they will change the flavor profile completely.
My soup turned out grainy. What went wrong?
This happens when the dairy or cheese gets too hot too fast. You likely boiled the soup after adding the cream, or you added the cheese over direct heat. Always remove the pot from the burner before stirring in the cheese. Patience is key here.
Can I make this in a slow cooker?
You can, but I prefer the stovetop method. If you want to use a slow cooker, make the roux on the stovetop first, then transfer it to the slow cooker with the broth, corned beef, and sauerkraut. Cook on low for 4 to 6 hours. Stir in the milk, cream, and cheese at the very end, off the heat.
What if I accidentally leave the sauerkraut undrained?
You will end up with a soup that is much more sour and thinner than intended. You can try to balance the sourness by adding a pinch of sugar or a splash of apple juice. You can also let the soup simmer longer to cook off some of the liquid.
Is this soup keto-friendly?
Yes, with a small adjustment. The flour in the roux adds some carbs. To make it keto, use a thickener like xanthan gum or a low-carb flour blend. Use heavy cream instead of milk. Then this Irresistible Reuben Soup: Creamy Comfort in Every Spoonful! is perfectly keto.
Can I use canned corned beef?
I do not recommend it. Canned corned beef has a very different texture and flavor. It is much softer and saltier. For the best results, use sliced corned beef from the deli counter or leftover homemade corned beef.
Conclusion
This Irresistible Reuben Soup: Creamy Comfort in Every Spoonful! has become a staple in my winter dinner rotation. It is everything I love about the classic sandwich, but in a form that is so much easier to eat. No more worrying about soggy bread or falling apart layers. Just a spoon, a bowl, and pure comfort.
I hope you give this recipe a try. Let me know in the comments how it turned out for you. Did you add any twists? Did your family love it as much as mine does? I cannot wait to hear about your soup-making adventures.
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