Creamy Celery Root Cauliflower Soup

This cozy, creamy celery root cauliflower soup is winter comfort food at its best! I like to make a big batch and freeze leftovers for busy weeknights.

Creamy Celery Root Cauliflower Soup

Soup season continues! While I’ve made many creamy cauliflower soups before, this time, I have a special guest ingredient that I’ve yet to use here on the blog: celery root! I had never cooked with celery root prior to this fall, probably because I never saw it at the farmers markets in Austin. That’s been part of the fun of moving somewhere new – new city, new vegetables.

Celery root has a wonderful, savory celery-like flavor and a creamy consistency when blended. For this soup, I combined it with roasted cauliflower, sautéed mushrooms, leeks, thyme, Dijon, and a pop of lemon at the end.

I also just love celery root’s gnarly, funky shape:

Creamy Celery Root Cauliflower Soup

This creamy celery root and cauliflower soup is winter comfort food at its best! Serve it with crusty bread or crispy croutons. I also sautéed a few mushrooms to put on top, but you’ll see in the recipe below that all of these garnishes are optional. You can keep this simple, or make it fancy.

You can also make it ahead and store it in the fridge, or freeze your leftovers (I like these glass containers) to save for a day when it’s too cold to leave the house.

Creamy Celery Root Cauliflower Soup

For more cozy soups, take a peek at the soup section of our recipe index!

5.0 from 1 reviews

Creamy Celery Root Cauliflower Soup

Cook time
Total time
This, cozy, creamy celery root cauliflower soup is winter comfort food at its best! It's healthy, it's vegan, and it freezes well!
Serves: 4 to 6
  • 1 (1-pound) cauliflower, broken into florets
  • 1 tablespoon extra-virgin olive oil, plus more for drizzling
  • 1 medium leek, white and light green parts, chopped and rinsed well
  • ½ teaspoon sea salt, more for sprinkling
  • 1 large celery root, peeled and chopped
  • 8 ounces cremini mushrooms, ends trimmed, chopped
  • 2 large garlic cloves, chopped
  • ¼ cup dry white wine
  • 4 cups vegetable broth
  • 2 tablespoons fresh thyme leaves
  • 1 teaspoon Dijon mustard
  • 2 tablespoons fresh lemon juice, more to taste
  • freshly ground black pepper
Topping/serving options:
  • Drizzle of coconut milk
  • Crusty bread, toasted as croutons or served on the side
  • Additional mushrooms, sautéed
  • Toasted pine nuts
  • Microgreens or tender thyme leaves
  1. Preheat the oven to 400°F and line a large baking sheet with parchment paper. Toss the cauliflower with drizzles of olive oil and sprinkles of salt and pepper. Spread evenly onto the baking sheet and roast for 25 to 30 minutes or until golden brown around the edges.
  2. Heat 1 tablespoon oil in a large pot over medium heat. Add the leeks, ½ teaspoon salt, and a few grinds of pepper and cook, stirring until soft, about 5 minutes. Add the celery root and mushrooms and cook until the mushrooms are soft, 8 to 10 minutes, turning down the heat as needed.
  3. Stir in the garlic, then the white wine. Let the wine cook down for 30 seconds and then add the broth and thyme. Cover and simmer 20 to 30 minutes, or until the celery root is fork tender.
  4. Let the soup cool slightly, then transfer to a blender. Add the roasted cauliflower and blend until smooth. Add the lemon juice and Dijon mustard and blend again. Taste and adjust seasonings, adding additional lemon juice if you would like more pop. If the soup becomes too thick, add water to thin to your desired consistency.
  5. Serve with desired toppings, generous drizzles of olive oil, and crusty bread.
*This soup can be made with roasted cauliflower instead of celery root. Use 2 chopped celery stalks in place of the celery root in Step 2. Add roasted cauliflower from a small 1-pound cauliflower to the blender in Step 4. (Roast florets at 400°F with drizzles of olive oil for 30 minutes or until tender). Season to taste with about ¼ teaspoon more salt and extra squeezes of lemon since cauliflower has less concentrated flavor than celery root. This cauliflower version yields a bit more soup than the celery root version listed above.


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Rate this recipe (after making it):  

  1. Brittany Audra @ Audra's Appetite

    I’ve actually never seen or heart of celery root before; thanks for including a picture! 🙂

  2. Bryan

    My gf and her son both got sick a few days ago and she told me they’re basically surviving off of soup! I just texted her the link to this recipe because I know she’ll love this, thank you!!!

  3. Madeleine

    Celery root is readily available in France. My favorite way to eat it is still has a grated salad, tossed with a mustardy vinaigrette, and parsley. It is also good mashed with potatoes. I enjoy your recipes very much, along with your photography. I bought your cookbook for my daughter.

    • Madeleine

      as a salad, sorry for the typo.

  4. Elfie burrough

    Growing up in Germany made me appreciate celery roots; either as a salad or in mashed potatoes. So delicious yet so simple.

  5. Gaby Dalkin

    Oooh, this cozy creamy soup looks amazing!

  6. sabrina

    nice dish, celery root! Yea, and great way to get a daily or other dose of cauliflower if you just can’t bear to eat it raw regularly, since it’s one of my regular diet ingredients, so thank you for a wonderful soup!

  7. Wanda Melebeck

    Healthy, vegan recipe, delicious soup!

  8. Heather Carey

    I think we call this ingredient celeriac. Maybe you can confirm that it is the same thing. I’ve never heard of celery root before.

    • Jeanine Donofrio

      yep it’s the same!

  9. Petra

    Sounds like a lovely soup! In the Netherlands it is one of our key ingredients in our Dutch originaliteit dish ‘snert’ a soup made of ‘split peas’. Anyway I include some finely chopped blocks in almost any soup broth that I make! Love the bite it adds.
    Re: the above recipe I am a little confused whether you always include cauliflower or not because you mention it as a variation at the asterisk but it is included in the list of ingredients and mentioned in step 1. Sounds like a great combination too!

    • Jeanine Donofrio

      Hi Petra, thanks for pointing that out – I mean to remove the asterisked section because I liked the cauliflower version the best.

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We love to eat, travel, cook, and eat some more! We create & photograph vegetarian recipes from our home in Chicago, while our shiba pups eat the kale stems that fall on the kitchen floor.