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Roasted Cauliflower & Leek Soup

This cauliflower leek soup is easy to make, but you'd never guess it from the taste - roasting & blending the veggies makes it flavorful & satisfying.

vegan / gluten free / favorite

Roasted Cauliflower & Leek Soup

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

Last night, we curled up on the sofa with this creamy roasted cauliflower & leek soup. (Note: I used cashews for the cream part – if you’re nut-free, check out this creamy vegan cauliflower soup recipe.) This process might look subtle, but roasting the cauliflower, leeks & garlic brings out some pretty big flavors… and in a surprisingly little amount of time. The short version of this recipe is this: Roast. Blend.

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

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.


4.9 from 26 reviews

Roasted Cauliflower & Leek Soup

  PrintThis creamy vegan cauliflower leek soup is a breeze to make - just roast & blend! I love it with a hunk of crusty bread on the side.Author: Recipe type: SoupServes: 3 as a main, 4-5 as a starter or sideIngredients
  • About 2 cups chopped cauliflower
  • 2-3 leeks, white and very light green parts, chopped (about 1 to 1½ cups)
  • 2 garlic cloves
  • Extra-virgin olive oil, for drizzling
  • ½ cup raw, unsalted, un-roasted cashews, soaked overnight* (see note)
  • 1½ teaspoons miso paste (or just salt if you don't have any)
  • Leaves from a few sprigs of marjoram or thyme
  • 3 cups water
  • 2 tablespoons more olive oil (to blend into the soup)
  • ⅛ teaspoon smoked paprika (or more to taste)
  • Squeeze of lemon
  • Sea salt and fresh black pepper
  • 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
  • Preheat the oven to 400 degrees. Spread the 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).
  • Add to your blender the veggies you just roasted, drained cashews, marjoram leaves, miso paste, a squeeze of lemon and 1½ cups water. Blend until pureed. Add the 2 tablespoons olive oil, paprika, and the remaining 1½ cups water. Blend again. Taste and adjust seasonings.
  • Pour into a medium saucepan and heat just until the soup is 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.3.4.3177
     

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