Thyme-Scented Fennel and Leek Soup

By • March 28, 2013 12 Comments

346 + Save

If you like it, save it!

Save and organize all of the stuff you love in one place.

Got it!

If you like something…

Click the heart, it's called favoriting. Favorite the stuff you like.

Got it!

Author Notes: A luscious spring soup, you say, that's dairy-free, vegan, and can be enjoyed by people with nut allergies? How on earth do you do it? Pepitas, my friends. By lightly toasting and then blitzing the living daylights out of them, you can create a light but creamy soup with subtle nutty undertones, which everyone can eat. It's also outstanding served chilled, by the way. Enjoy!! ;o)AntoniaJames

Serves 4 as a light first course

The Soup

  • 1 tablespoon olive oil
  • 2 medium leeks (white parts only), thinly sliced and thoroughly rinsed
  • 1 stalk celery, sliced
  • 3 teaspoons fresh thyme leaves divided (2 for the soup, 1 for the croutons)
  • 2 bulbs of fennel (coarsely chopped), stalks and fronds reserved for the stock
  • 5 cups stock (Use the recipe below for the best result.)
  • 1/2 cup raw pepitas (pumpkin seeds)
  • Salt
  • Large handful of small fresh bread cubes (about a cup or more)
  • More olive oil (about a tablespoon) for making the croutons
  • 1/2 teaspoon fennel seeds, freshly ground (measure before grinding)

The Stock

  • Green tops of the 2 medium leeks you're putting in the soup, thoroughly cleaned and coarsely chopped
  • Stalks and fronds of the 2 fennel bulbs you're putting in the soup, coarsely chopped
  • 1 celery stalk
  • Small handful of fennel seeds (about 3 tablespoons)
  • Small handful of parsley sprigs. If all you have are stems, that's fine.
  1. MAKE THE STOCK: In a stock pot, put 6 cups of cold water on to boil, covered. Meanwhile, thoroughly clean and coarsely chop the leek tops. Clean and coarsely chop the fennel tops and fronds. Scrub and cut the celery stalk into 2-inch pieces. Coarsely chop the parsley.
  2. Add everything you just cut, along with the crushed fennel seeds, to the stock pot. Bring to a boil, then turn the heat down. Let the stock bubble lazily for at least 30 minutes. 45 is even better. Strain and measure the stock. Add water if necessary to make five cups.
  3. MAKE THE SOUP: In a large, heavy soup pot, warm the olive oil and then add the sliced leeks. Coat with the oil, cover the pot, and sweat for about three minutes over medium low heat, stirring after a minute or so.
  4. Add the fennel, celery, and 2 teaspoons of fresh thyme leaves, along with the stock and a good pinch of salt. Bring to a slow boil, then turn down the heat so the soup is simmering. Let it continue to simmer with the lid on for about 20 minutes.
  5. Heat your oven to 400 degrees, for toasting your croutons. Or use a toaster oven. I don't have a toaster oven, so I do this while baking or roasting something else.
  6. Meanwhile, toast the pepitas in a hot dry skillet on the stove over medium heat for about a minute, shaking the skillet frequently, lest the pepitas burn. Immediately remove them from the skillet and put them into a blender. (Use a conventional blender for this and not a stick blender. It needs to run for a good long while. Plus, the bigger blender is better suited for blending the fibrous vegetables in this soup.)
  7. MAKE THE CROUTONS: Toss the bread cubes with a good sprinkling of olive oil; then sprinkle on a hefty pinch of salt, the remaining teaspoon of thyme leaves and the ground fennel seeds. Bake on a cookie sheet for about 5-7 minutes, or until toasted and fragrant.
  8. FINISH MAKING THE SOUP: Use a ladle or cup measure with a handle to remove about 1/2 cup of broth from the soup. Put it in the blender with toasted pumpkin seeds. Hold the lid down using a tea towel. Blend at high speed for about 3 minutes, scraping down after the first minute and then again after the second minute.
  9. Add the rest of the contents of the soup pot to the blender. Cover the top of the lid with a tea towel and blend at high speed for two minutes. Scrape down the sides, blend for another two minutes, and then blend for another minute. Test for salt and correct.
  10. If serving this for a formal dinner, strain the soup through a fine sieve and warm again gently before plating.
  11. Garnish with the croutons.
  12. Enjoy! ;o)

Topics: Soup

💬 View Comments ()

Comments (12) Questions (0)


5 months ago Gal potashnick

this is absolutely delicious. next time will try adding roasted garlic to the mix. and have to agree the croutons are amazing. had to keep my boyfriend from eating them all before we got to the soup. Thank you!


7 months ago krystine

Damn girl, this is some gooooood soup! :)


about 1 year ago lizabeth

Hi Antonia - and thank you for this delicate, creamy soup. I am a "beginner vegan" and it is sometimes difficult to find delicious recipes to make use of my CSA box ingredients. What a wonderful way to use fennel! You have also made me a fan of making my own croutons!


about 1 year ago AntoniaJames

AntoniaJames is a trusted source on Bread/Baking.

Thanks, lizabeth! This is one of my family's favorite soups. Here's another vegan soup you might like:
I eat 18 vegan-style (plant food only) meals per week for health and policy/impact reasons, so I've been developing and adapting many of my favorite recipes to make them vegan. When I have time within the next month or so, I plan to edit the recipes I've posted to show how to adapt them, and to tag as vegan for search purposes. Stay tuned . . . . ;o)


over 1 year ago Ellen

I made this exactly as described last night, and it was lovely. I added some leftover farro to my bowl today for lunch, but I should have made extra croutons - they made the soup!


over 1 year ago AntoniaJames

AntoniaJames is a trusted source on Bread/Baking.

Thank you, Ellen! I'm so glad you liked it. You're right about the croutons. I'm regularly making them these days with the end pieces of the artisanal breads that I bake. We had some on a simple potato leek soup the other night; the few that were left I put on my salad last night. So easy to make -- a great return on such a small investment of time and energy. ;o)


about 2 years ago Judy Hettena Wright

No mention of Fennel Bulbs in ingredients, and what are you supposed to do with the Fennel bulbs? Chop them? Slice them?


almost 2 years ago AntoniaJames

AntoniaJames is a trusted source on Bread/Baking.

Thanks, Judy. I corrected it. (Two fennel bulbs, coarsely chopped.) ;o)


about 2 years ago savorthis

This looks so wonderful. I use fennel a lot in soups because I am allergic to celery (!) so I'd have to omit that, but I love the use of pepitas and croutons. Yum.


over 2 years ago kdmcooks

Fennel, not thyme... P


over 2 years ago kdmcooks

Fennel is not listed in the ingredients, but mentioned in the stock instructions...


over 2 years ago AntoniaJames

AntoniaJames is a trusted source on Bread/Baking.

In the ingredients for "Soup", the recipe calls for three teaspoons of fresh thyme leaves. They are mentioned again in Step 4. I don't use thyme in the stock, but you could, if you so desired. ;o)