Fennel Leek Soup with Walnuts & Turmeric

Created by Laura Wright — Published 17/10/2013
4.92 from 23 votes

The color and the creaminess! This soul-satisfying soup brings fennel, leeks, walnuts, and apples together in beautiful golden harmony.

An overhead shot of fennel walnut soup with turmeric on a beige and blue napkin over a grey concrete background. The soup is bright yellow and garnished with toasted walnuts, fennel fronds and a drizzle of maple syrup.

Every season is vegan soup recipes season in my eyes. The color of this fennel walnut soup with turmeric wins me over every time. I love adding a handful of toasted nuts to a blended soup because it “creams” the texture up a bit. This also makes the soup super satiating!

Apples fallen from a tree in deep grass and weeds.
An up close shot of fennel walnut soup with turmeric. The soup is bright yellow and garnished with toasted walnuts, fennel fronds and a drizzle of maple syrup.
An overhead shot of soup ingredients on a light wood cutting board in moody lighting.

I love fennel with leeks and apples in a salad, all sprinkled with toasted and chopped walnuts. A warm version of that felt just right to me. The added sprinkle of turmeric for that slightly bitter and warm edge works really nicely.

Cooking with Leeks & Fennel:

  • I wash leeks by splitting them down the middle and running my fingers and water through all the layers. If there is grit in your leeks, that’s where it’s hiding!
  • To chop fennel for soup, I use the bulb portion and start by cutting it in half down the middle. From there, I lay the flat side down, and cut it into slices. You don’t have to be overly precise here because everything is getting blended. Save the fennel fronds for garnish.
  • The part of the leek that I recommend using for soup is the white and very light green part. These parts are flavorful and tender.
  • To use up the dark green parts of the leeks, I recommend chopping them up and saving them for vegetable stock.

I like to serve this soup with a fine drizzle of maple syrup, fennel fronds, and extra toasted walnuts. To store leftovers, transfer to a sealed container and keep in the fridge for up to 5 days. You can also freeze this soup!

For more soup inspiration, I recommend checking out my creamy white bean soup with kale, carrot and red lentil soup, and this simple chickpea soup.

4 photos: one of an apple tree up close, one of fallen spoiled apples in the dirt, one of a package of turmeric, and one of a bowl of fennel walnut soup.
A wooden spoon is sticking out of a pot and it has a dusting of turmeric on it.
An overhead shot of fennel walnut soup with turmeric on a beige and blue napkin over a grey concrete background. The soup is bright yellow and garnished with toasted walnuts, fennel fronds and a drizzle of maple syrup.

Fennel Leek Soup with Walnuts & Turmeric

This fennel and leek soup also features apples, walnuts, and turmeric — this recipe is easy to make, delicious, and golden in colour, too! The walnuts are blended directly into the soup to help give it a super creamy texture.
4.92 from 23 votes
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings 4

Ingredients

Soup

  • 2 tablespoons olive oil
  • 3 leeks, white and light green parts chopped (discard green tops or use them for stock)
  • 2 teaspoons fresh thyme leaves, chopped
  • 1 medium fennel bulb, cored and chopped
  • 1 medium apple, peeled, cored and chopped
  • 1 teaspoon ground turmeric
  • ½ cup walnut halves, toasted
  • sea salt and ground black pepper, to taste
  • 4 cups vegetable stock

To Serve

  • maple syrup
  • freshly ground black pepper
  • chopped fennel fronds
  • more toasted walnuts chopped

Equipment

Notes

  • This is a pretty simple soup! Of course, I always think homemade vegetable stock is ideal, but especially with a soup with limited ingredients like this one.

Instructions

  • Heat the olive oil in a large soup pot over medium. Add the chopped leeks and thyme. Stir and sauté the leeks until they are a bit soft, about 4 minutes. Add the chopped fennel and apples. Stir everything up a bit. Add the turmeric and stir to coat all of the vegetables evenly. Sauté the vegetables until the fennel is starting to soften, another 4 minutes. Add the walnuts and stir them in. Season the whole thing with salt and pepper. Add the vegetable stock and stir.
  • Cover the pot and bring to a boil. Simmer until all of the vegetables/apples are very soft, about 12-15 minutes. Remove the soup from the heat. Carefully blend the mixture in batches in an upright blender until totally smooth. Check the soup for seasoning and adjust accordingly.
  • Pour the puréed soup back into the pot. Bring the puréed fennel walnut soup to a boil and then serve hot with little drizzles of maple syrup, fresh black pepper, fennel fronds, and more toasted walnuts if you like.
17/10/2013 (Last Updated 24/07/2025)
Posted in: autumn, creamy, earthy, gluten free, grain-free, quick, refined sugar-free, soup, spring, summer, vegan, winter

65 comments

4.92 from 23 votes (13 ratings without comment)

Recipe Rating





  • annupamaa

    Good substitute for fennel ?

    • Laura Wright

      Celery would work nicely!
      -L

  • Judy

    5 stars
    ABSOLUTELY DELICIOUS! I never would have thought these ingredients would render such a lovely and tasty soup! Hats off to you!

  • Bennett

    Could you do this with pecans?

    • Laura Wright

      Hi Bennett,
      I think pecans would work well here! Roughly the same density as walnuts, just a slightly different flavour that would still be complimentary I think.
      -L

  • Mara

    5 stars
    Hands down my favourite soup.

    Such an interesting ingredient combination for a beautiful warm and full flavoured soup.
    I grow fennel in my garden solely to make this! Thank you for sharing so generously.