cheesy potato & leek soup

Who doesn’t love a freshly baked potato topped off with a generous sprinkling of grated cheese, green onions and a dollop of sour cream? Now imagine a creamy version of that flavor explosion in your soup bowl. In less than an hour, you can experience that deliciousness with this Cheesy Potato & Leek Soup. 

I’ll share my version with you. If there’s an ingredient that you and your family may not care for, don’t worry …this one is easily customized.

What I use to make my Cheesy Potato & Leek Soup…

cheesy potato & leek soup

  • Olive oil
  • Butter
  • Leeks – white & light green parts only
  • Milk – low fat or whole milk
  • All-purpose flour – or gluten-free flour
  • Yukon gold potatoes
  • Chicken broth or stock – or vegetable broth
  • Gruyère cheese
  • Fresh herbs
  • Baby Swiss cheese

cheesy potato & leek soup

When prepping the leeks, it is advisable to take the extra step of soaking the leek slices in cold water for a short time. In their natural form, leeks tend to harbor sandy grit between the circular layers.

By soaking them after giving them a good rinse, you’ll definitely remove all of that residue.

  • In a large pot or Dutch oven of at least 4-quart capacity, heat the oil and butter over medium heat.
  • Add the sliced leeks and sauté for about 10 minutes, until tender but not caramelized.

cheesy potato & leek soup

  • Whisk together the milk and flour until smooth.
  • Add the mixture to the tender leeks.
  • Cook and stir for 5 minutes, until thickened.

cheesy potato & leek soup

  • While that’s happening, get your potatoes peeled and sliced.

cheesy potato & leek soupcheesy potato & leek soup

  • Add the sliced potatoes along with the broth.
  • Bring to a boil; reduce heat to a simmer.
  • Cover and cook for about 20 minutes, until the potatoes are tender.
  • Remove from the heat.

cheesy potato & leek soupcheesy potato & leek soup

  • Using an immersion blender, puree the soup until smooth and creamy – if you have an immersion blender, use it here. The clean-up will be super easy with no need to transfer the hot soup to and from a blender.
  • Alternatively, the soup can be pureed in a blender then returned to the pot.

cheesy potato & leek soupcheesy potato & leek soup

  • Add the shredded Gruyère cheese.
  • Stir over medium-low heat just until the cheese is melted.

cheesy potato & leek soupcheesy potato & leek soup

  • Season to taste with salt & pepper, if needed – refrain from seasoning as you go. Some broths and cheeses can be rather salty and can affect the outcome of the soup.
  • If desired, add some snipped fresh herbs to be blended into the soup.
  • Be sure to save some to top off each serving.

cheesy potato & leek soupcheesy potato & leek soup

What fresh herbs go well with this Cheesy Potato & Leek Soup?

The list can be quite long here ..it really depends on what you and your family like.

My favorites include parsley, rosemary, thyme, dill and chives.

  • Top off each serving with strips of baby Swiss and a sprinkling of snipped fresh herbs, if desired.

cheesy potato & leek soupcheesy potato & leek soup

Can my Cheesy Potato & Leek Soup be made gluten-free?

Absolutely! Replace the regular all-purpose flour with your favorite gluten-free variety and you’re all set.

Would a vegetarian version be just as good?

Yes! The key is to replace the chicken broth with a good quality vegetable broth or stock that’s hearty and flavorful.

What if we don’t like the strong taste of some Swiss cheeses?

This can be made into a more “kid-friendly” soup and still be super delicious. Some excellent cheese subs would be cheddar, gouda or fontina.

It depends on your personal preference. Just be sure to choose a cheese that has good melting properties.

cheesy potato & leek soupcheesy potato & leek soup

cheesy potato & leek soup

Potatoes and leeks are simmered in flavorful broth until tender. Blend it all into creamy deliciousness then add the shredded cheese. Ready in under an hour.

Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings 8 one-cup servings
Author Rosemary Stelmach

Ingredients

  • 1 tablespoon olive oil
  • 1 tablespoon butter
  • 1 cup thinly sliced leeks, white & light part only (about 1 1/2 leeks)
  • 2 cups milk
  • 3 tablespoons all-purpose flour
  • 16 ounces Yukon Gold potatoes, peeled & sliced
  • 4 cups chicken broth or stock
  • 8 ounces Gruyère cheese, shredded
  • 2 ounces baby Swiss cheese, thinly sliced into strips for serving (optional)
  • snipped fresh herbs, for serving (highly recommended)

Instructions

  1. In a large pot or Dutch oven of at least 4-quart capacity, heat the oil and butter over medium heat. Add the sliced leeks and sauté for about 10 minutes, until tender but not caramelized.

  2. Whisk together the milk and flour until smooth. Add the mixture to the tender leeks. Cook and stir for 5 minutes, until thickened.

  3. Add the sliced potatoes along with the chicken broth. Bring to a boil; reduce heat to a simmer. Cover and cook for about 20 minutes, until the potatoes are tender. Remove from the heat.

  4. Using an immersion blender, puree the soup until smooth and creamy. Alternatively, the soup can be pureed in a blender then returned to the pot.

  5. Add the shredded Gruyère cheese. Stir over medium-low heat just until the cheese is melted. Season to taste with salt & pepper, if needed.

  6. Top off each serving with strips of baby Swiss and a sprinkling of snipped fresh herbs, if desired.

Cheesy Potato & Leek Soup

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