roasted cauliflower & leek soup

Roasted Cauliflower & Leek Soup // loveandlemons.com

Thank you all SO much for your ideas & suggestions of what to make with my giant cauliflower… so many creative ideas, I just loved reading through them all.

Last night, we curled up on the sofa with this creamy roasted cauliflower & leek soup (made with cashews for the cream part). This might look subtle but the roasting process brings out some pretty big flavors… and in a surprisingly little amount of time. The short version of this recipe is: Roast. Blend.

(But I promise, it tastes fancier than that).

Roasted Cauliflower & Leek Soup // loveandlemons.com

Thanks to so many of you for commenting with the leek & cauliflower soup idea… I went with this cashew cream idea suggested by Alisa. With the “toss it all in the oven” method (and paprika addition) as suggested by Anouk.

roasted cauliflower & leek soup

Yield: serves about 3 as a main, 4-5 as a starter or side

roasted cauliflower & leek soup

Ingredients

  • about 2 cups chopped cauliflower
  • 2-3 leeks, white and very light green parts, chopped (about 1 to 1.5 cups)
  • 2 cloves of garlic
  • olive oil, for drizzling
  • 1/2 cup raw, unsalted, un-roasted cashews, soaked overnight* (see note)
  • 1.5 teaspoons miso paste (or just salt if you don't have any)
  • leaves from a few sprigs of marjoram or thyme
  • 3 cups of water
  • 2 tablespoons more olive oil (to blend into the soup)
  • 1/8 teaspoon smoked paprika (or more to taste)
  • squeeze of lemon
  • a few more pinches of salt
  • red pepper flakes (optional)
  • splash of white wine vinegar or champagne vinegar, at the end (especially if you made yours too spicy like I did).

Instructions

  1. Preheat oven to 400 degrees. Spread cauliflower, leeks and garlic on a baking sheet. Drizzle with olive oil and sprinkle with a few pinches of salt & pepper. Roast for 20-30 minutes, rotating halfway through. Remove when everything is starting to turn golden, but before the leeks are burning (if a few get too charred, it's ok, just pick them out later).
  2. Add to your blender (a Vitamix ideally), the veggies you just roasted, drained cashews, marjoram leaves, miso paste, a squeeze of lemon and half the water (1.5 cups). Blend until pureed. Add olive oil, paprika, and the rest of the water. Blend again. Taste and adjust seasonings.
  3. Pour into a medium saucepan and heat just until it's warm. Stir in a little more water if it's too thick. Serve with bread on the side.

Notes

*be sure to use plain raw cashews or your soup will taste too much like cashews. If you're using a high speed blended (vitamix or blendtec), you could get away with soaking your cashews for less time because the blender will liquify everything thoroughly anyway.

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59 comments

  1. Shauna from shecooksmacro.com on said:

    yummy! that looks delish. Will definitely give this a whirl!!

    • jeanine from loveandlemons.com on said:

      thanks! (btw, I’ll be trying your recipes out too – thanks so much for posting, I was so glad to be introduced to your blog!)

  2. What a fun idea with the idea contest. This soup looks and sounds just delightful — and I love the cashews for creaminess instead of regular cream (which is usually too heavy for my stomach)!

  3. Jennifer from blog.jchongstudio.com on said:

    nom nom trying this tonight

  4. Anouk on said:

    Lovely! Funky twist – adding the cashews. My first try going ‘nuts’ was inspired by your broccoli pistachio soup :)

    • jeanine from loveandlemons.com on said:

      oh so glad! I know it’s a weird concept at first – the whole nut/cheese thing… thanks so much for the recipe inspiration!

  5. This soup looks so lovely. What a great idea for lunch!

  6. Chiara from lacucinadellostivale.blogspot.it on said:

    It looks so delicious!!

  7. I LOVE roast and blend soups, so easy, but so so good! I wonder if I could sneak this past my cauliflower hating mister : )

    • jeanine from loveandlemons.com on said:

      well you certainly can’t see any cauliflower in it… I won’t tell if you won’t :)

    • B on said:

      Do a mix of potatoes and cauliflower. Then he might not know.

  8. Eileen from hampiesandwiches.blogspot.com on said:

    Yay for cauliflower & leek! I just made a soup a lot like this right before christmas. I didn’t roast anything, though–that sounds like a perfect way to jazz it up!

  9. I am so making this over the weekend. A biiiig batch so I have plenty of leftovers!

  10. i love leeks and i love cauliflowers, this soup i most definitely will have to try soon! looks delish.

  11. Courtney Jones from thefigtree.blogspot.com on said:

    Yum! Love roasted cauliflower. So much flavour, yet so simple. This looks wonderful.

  12. Ashley from edibleperspective.com on said:

    Okay. I’m pretty positive that we are food twins. Cauliflower week? Sign me up! I’m hooked on it right now, much more so than in the past. Can’t wait to see what you come up with!

  13. Alisa on said:

    I loved seeing your take on those ingredients…delicious! :) and beautiful photos, as always.

  14. adorable blog!
    love this soup, one of my favorites ever.. and love that white cocotte!! where did you get it?

  15. Flight School from flightsimfl.com on said:

    This looks really good. Perfect for a chilly evening!

  16. Nina from toohottieforthatbody.com on said:

    Oh this came at the perfect time! I need a new soup to warm up my soul after this frigid week. I’ll have to make it when my carnivorous husband goes back to the firehouse to please the tween who wants to be a vegetarian.

  17. Wonderful! I just taught my sister to make creamless potato-leek soup — big hit with her kids — but I’ve been looking for a version with more veggies and less starch. Will definitely be making and sharing this one!

  18. Alison from paperwhitesblog.blogspot.com on said:

    YUM! absolutely making this this week!!

  19. Alison from paperwhitesblog.blogspot.com on said:

    PS: how to soak cashews? (and what does that do)?

    • jeanine from loveandlemons.com on said:

      Hi Alison, sorry that wasn’t clear, I’ll go add some more explanation into the recipe. If you soak them ahead of time, they’ll be creamier when you go to blend them. Some say you need to soak for 2-6 hours, but I find I can get away with less time (or sometimes none) because I use a Vitamix blender. You’d benefit from more soaking time if you’re using a less powerful blender.

      • Alison from paperwhitesblog.blogspot.com on said:

        Thank you so much! Excited to learn a new technique/trick!

      • Jacqueline on said:

        I’m trying this without the cashews because I have everything else BUT that, I can’t get to the store, and if I wait any longer my leaks are going to go bad… So I may substitute some soy milk or (horribly bad for you) vegan sour cream that I do have??? Haven’t decided, going to see what I’m working with first when the veggies are done roasting. Wish me luck! lol

        • jeanine from loveandlemons.com on said:

          ok let me know how it goes/went!

  20. Julia on said:

    I made this last night! I almost never make soups because, to me, they just don’t seem like the effort. But this recipe was so quick and easy, I had to give it a try – I’m so glad I did!

    I doubled the recipe – and then doubled the garlic (what can I say, I’m Italian) – but next time I’d scale back a little. I also didn’t have any cashews, so I subbed almond milk and it turned out great! I’d love to try this again and play around with different ingredients – it’s a great, simple recipe that I feel I could have fun with.

    I’m a very new reader (4 days) and I’ve already got a cache of your recipes I’m excited to try out. After the success with this one, I think I’ll get cooking sooner than later!

    Thanks!

    • jeanine from loveandlemons.com on said:

      I’m glad you liked it! Welcome!

  21. This looks great. I love cashews instead of the cream making it vegan. Also seems like such a good pairing with the cauliflower. Really would bring out the nuttiness.

  22. MMM, fantastic. I’d almost forgotten about cashew cream – so good. Can’t wait to try this.

  23. Liz B on said:

    Darn it! I almost bought cauliflower and leeks at the fruit shop today, but opted out – silly me!

    This looks like what I wish I was having for dinner tonight!

  24. Good gracious your soups are amazing. Inspiring. After the roaring success of your sundried tomato soup, I am definitely making this tonight. And thank you for helping my resolution of going vegan for the month of January be delicious, warming and comforting.

  25. fig + fauna from figandfauna.com on said:

    looks amazing – making an inspired version tonight!

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  28. Betty Bake from bettybake.co.za on said:

    sounds delicious :)

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  30. Christina on said:

    Made this soup tonight and it was absolutely delicious! Soups like this have always intimidated me, but it was so easy and took no time to make. My boyfriend feel in love with it and my mom loved that I used cashews to make the creamy texture (she’s been telling to me for months that I should go gluten & dairy free for the health benefits). Anyways, thank you for the amazing recipe! Like you, I got a HUGEmongous cauliflower from Whole Foods. I’ve been thinking about giving FarmHouse a try though, seeing that we live in Austin as well!!

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  32. Hi Jeanine, I just discovered your lovely blog and it’s fantastic! I really like adding raw nuts to soups to make them creamy without the use of dairy. I just posted a broccoli basil soup made with walnuts that is really yummy. Thanks for all the goodness you share!

  33. Cauliflower is one of my favorite veggies; seriously. This soup looks so silky and I love the use of cashews .

  34. Theresa on said:

    So excited to have recently discovered your site! We made this soup last night and it is so delicious. Thanks for sharing!

    Theresa

  35. Annie from phoo-d.com on said:

    I happened to have all the ingredients on hand (including cashews soaking in the fridge!) so I made this tonight. It was terrific and even our 2 year old loved it. I’m glad I doubled the quantity! You have a beautiful site.

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  37. This is a great recipe. I like how you combined roasted leeks with the cauliflower and also used miso for an Asian touch. This inspired me to make something similar–a roasted cauliflower and leek soup with a broth similar to what you get in Tom Kha Gai soup (coconut, ginger and lime). I topped it with bacon crumbles, chopped peanuts and cilantro.

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  40. Danielle on said:

    Yum! I love mixing up a variety of roasted vegetables for soup. So creamy with such depth of flavor! I’m so glad I found this soup, completely delicious! I added a little bit of brown butter and seared scallops to the top and it was so rich and wonderful!

    • jeanine from loveandlemons.com on said:

      oh I bet scallops would be so delicious, glad you liked it!

  41. Tia on said:

    I cant get to the store and I’m missing the Magorame, Thyme & white wine vinegar. Any substitudes? I really want to make this since I’m lil under the weather. Thanks

  42. Heather from snacktive.blogspot.com on said:

    I had my parents over for dinner and cooked for them for the first time. I made this soup and we all loved it! It tasted so creamy and decadent. I brought leftovers to work today and am about to enjoy it again!

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  45. nicole on said:

    Have you tried to freeze this soup? I bought all the ingredients, but am not going to have space in our week to eat it ;)

    • jeanine from loveandlemons.com on said:

      I haven’t… I think it would work but the texture might become less creamy after you thaw it (I’ve had that happen with similar soups). I’ll sometimes blend it again before I’m ready to eat so it’s super creamy again.

      If you try freezing this, let me know how it works out!

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