Fall Faves / Food / Main Dishes / Soups, Stews + Chili / Vegetarian

Easy One-Pot Cauliflower Soup

Hands holding a bowl of cauliflower soup

Soup season, I am HERE for you. And this easy one-pot cauliflower soup is just the beginning.

As a hard-wired Northerner, September always puts a bounce in my step because the best time of year is creeping up: fall. But now that I’m in NC, I have to remind myself that the crisp breeze and crunchy leaves tumbling through the streets aren’t likely until late October. But! I’m not the only one in the South filled with untimely excitement. Even here, pumpkin spice lattes are being frothed, department stores are adorned with skeletons, and ads for the State Fair are circulating hard. Which inevitably helps us believe that we’ll be romping around the fairgrounds in no time—hot cider in one hand, and some kind of deep-fried monstrosity in the other.

Ingredients in a Dutch oven

Easy One-Pot Cauliflower Soup.

I’m kicking soup season off with this creamy bowl of delish because cauliflower soup is nostalgic to me and, frankly, I don’t eat cauliflower often enough. My husband hates it, so having it for dinner is out of the question. But it’s a fab lunch option when blended into a wholesome soup.

I’ve made things super simple here by keeping everything in one pot—plus a blender, but that’s optional. If you have an immersion blender, you can keep everything in your pot and blend away. Because I love a velvety smooth texture, I opt to transfer the roasted ingredients to my trusty Vitamix. That thing never lets me down.

Roasting all of the ingredients brings a deep, warm, and rich flavor to the soup which I find perfect for fall… or the time spent dreaming about fall before fall. Like now.

To add an herbaceous and nutty twist, I like to whirl in some pesto and top my bowl off with some heart-healthy walnuts.

Cauliflower soup in a Dutch oven

Cauliflower soup being spooned up

I hope everyone is ready for ALL the soups, because I’ve got a lot of ideas brewing :)

In the meantime, if you’re into a classic tomato soup with grilled cheese, you need this gem of a recipe in your life stat.

If you make this dish, snap a photo and tag me on the Insta @killing__thyme! I love seeing your creations, and you could be featured in my monthly newsletter <3

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5 from 12 votes

Easy One-Pot Cauliflower Soup

This easy one-pot cauliflower soup is the perfect belly-warming dish to curl up with during the cooler months. Everything is roasted in one pot before being blended to velvety perfection.
Course Main Course
Keyword cauliflower, easy, One Pot, soup
Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings 8 cups
Author Dana Sandonato


  • 1 large head of cauliflower, or two smaller heads
  • 1 sweet onion, rough chopped
  • 4 cloves of garlic, smashed
  • 1 TBSP fresh thyme
  • 2 TBSP olive oil
  • 1/4 tsp nutmeg
  • 1 tsp garlic powder
  • 1 tsp salt
  • Cracked black pepper
  • 2.5 cups vegetable broth
  • 2 cups milk
  • 2 TBSP nutritional yeast (optional)


  • 1 Dutch oven
  • 1 immersion blender or high-powered blender

Optional Toppings.

  • Pesto
  • Walnuts
  • Microgreens


  • Pre-heat the oven to 450° F.
  • Cut the cauliflower into near bite-sized florets. Rinse them off, shake them to rid of excess water, and transfer them to your Dutch oven. Add the onion, garlic cloves, thyme, olive oil, and spices. Give everything a good stir to distribute the oil and seasonings as best as you can.
  • Place the Dutch oven into the oven, uncovered, for 30-40 minutes or until most of your veggies start to take on a golden color. Stir the contents of the Dutch oven every 15 minutes or so during cooking time.
  • When done, remove the Dutch oven and set it onto the stovetop; stir well.
  • Add the broth, milk, and nutritional yeast. If you have an immersion blender, use it to blend all of the contents in the Dutch oven until smooth, or until you've reached the consistency/texture you prefer. If you don't have an immersion blender or if you prefer a perfectly smooth purée, transfer the contents to a high-powered blender, like a Vitamix, and blend until smooth. Depending on the size of your blender, you may have to do this in batches.
  • Taste, and season with extra salt and pepper if need be, to your liking.
    Serve with a drizzle of pesto, walnuts, and microgreens (topping optional).


  • […] Try cauliflower in my Easy One-Pot Roasted Cauliflower Soup! […]

  • Behind The Scenes: February - The Crafted Life
    February 28, 2019 at 3:14 am

    […] finally given it a go. The top soups I tried were this tomato basil tortellini soup and a cauliflower soup. Both easy, both delicious, and both are getting made […]

  • Rachel | The Crafted Life
    February 20, 2019 at 5:37 pm

    5 stars
    Made this last night and wouldn’t change a thing! So good and easy to make!

  • […] Easy One-Pot Cauliflower Soup […]

  • Justine
    November 24, 2018 at 11:43 pm

    Yum! This looks heavenly, Dana! Would you believe I’ve never had cauliflower soup? That’s definitely going to have to change — this looks so comforting! Beautiful as always!

  • Cream of Broccoli Soup | Killing Thyme
    November 8, 2018 at 3:30 pm

    […] Easy One-Pot Cauliflower Soup […]

  • Lizzie
    October 23, 2018 at 11:53 pm

    5 stars
    Well, Boise has become bearable temperature-wise, and we made this the other night, for company! The ONLY thing I dinked around with was adding about 1/2 teaspoon of anchovy. No, it wasn’t fishy; no, it didn’t change the color; but yes, it added that “umami” that nobody could exactly identify but raved about. The balance of the anchovies went into a huge classic Caesar Salad that preceded this creamy bowl of heaven. Definitely six-star material.

    • Killing Thyme
      October 24, 2018 at 11:21 am

      Lizzie! I love that you added anchovies. I’m a sucker for those little salt bombs. I love how you worked them into your starter salad and your soup. Perfect compliment. Thanks so much for taking the time to stop by and leave feedback! <3

  • Dana
    September 19, 2018 at 4:34 pm

    5 stars
    I’m in Canada, so soup season usually starts right around now. Although it was a sweltering 43 degrees yesterday so maybe not quite yet haha I have been getting super excited about fall baking and doing huge batches of delicious fall themed soups as well. This look so yummy, I LOVE cauliflower soup. Unfortunately I can’t eat it as I’m very sensitive to cauliflower (along with onions ). I can eat a little bit of cauliflower if its on my plate but a whole soup really affects my digestion system. I really miss it and if I am gonna cheat, this would be a great one to try. The added pesto sounds amazing!!!

  • Sues
    September 9, 2018 at 9:21 pm

    5 stars
    I’m banking on the fact that this will make my husband fall in love with cauliflower as much as I am!! I’m pretty sure I love everything about it, but I’m especially impressed by how perfect that pesto swirl is :) This is one thing that will have me actually looking forward to another New England winter!

    • Killing Thyme
      September 10, 2018 at 11:20 am

      Thanks, Sues! I hope this does keep you warm throughout that chilly winter. That’s one thing this Northerner doesn’t miss: white winters. We get just enough snow for a small period of time to get a wee taste of it, and it’s gone before we can get tired of it. Thank goodness ;) Haha.

  • Annemarie
    September 9, 2018 at 6:45 pm

    5 stars
    I’m in New England, so soup season is here! (We’re having stew tonight.) And I can’t think of a better way to start fall off right than cauliflower soup. Especially with that swirl of pesto and some toasted walnuts. We’re all fans here, so it would be great for dinner with a nice salad.

    • Killing Thyme
      September 10, 2018 at 11:21 am

      Sometimes a hearty and warming soup is the *perfect* dinner! Especially on a dark, cool evening. It’s already getting darker earlier here, and we haven’t even changed the clocks yet.

  • Carmy
    September 9, 2018 at 5:57 pm

    5 stars
    I am READY for soup season and for summer to be OVER. Your soup looks SO cozy (I’m also in love with your nail polish colour) and I’m ready to make me some soup now that summer is outta here. I never had considered topping my cauliflower soup with pesto before so I’m pretty excited to try that!

    I love that it’s all made in one pot too so less dishes to sit in the sink.

    • Killing Thyme
      September 10, 2018 at 11:23 am

      Me too girl, me too. I’m seeing that our current forecast is still a string of 80-degree weather, but we’ve got a hurricane coming in so it’s going to be a dark a rainy week. Appropriate for soup! If we’ve got the power to cook it, that is :|
      And thank you! I love that grey polish :)

  • Amanda
    September 9, 2018 at 9:25 am

    5 stars
    I LOVE a bowl of creamy cauliflower soup, and am absolutely obsessed with the idea of swirling in a little pesto. OMG. That needs to happen in my life immediately. Your photos are absolutely stunning, also. The cozy sweater, the alluring soup. I haven’t been ready to leave summer behind, but now I’m over here thinking “bring on fall!”

    • Killing Thyme
      September 10, 2018 at 11:25 am

      Thanks so much, Amanda! I hope you love the addition of pesto in your cauliflower soup as much as I’m digging it. It just adds such a nice welcomed herbaceousness (I’m going to go ahead and say that’s a real word).

  • Marisa Franca
    September 8, 2018 at 12:00 pm

    5 stars
    It is raining and it’s just the kind of chill that goes right to the bone!! I haven’t made cauliflower soup — Hubby likes the chunky soups where he gets a spoonful of ingredients. I love cream soups and this sounds so good and good for you. I’ll be trying it out soon — and yes roasting the veggie first concentrates the flavor. Can’t wait to make it.

    • Killing Thyme
      September 10, 2018 at 11:27 am

      Ah, I do not miss that kind of chill! Though there are definitely times we get it here in the South. (And I definitely whine through it every time ;) )
      I can definitely appreciate a chunk soup now and again! I have one coming up next month, actually. So maybe that’ll be more up your hubby’s alley. In the meantime, maybe he can settle for this :P

  • Debra
    September 7, 2018 at 10:44 am

    5 stars
    I live in the NorthEast so I can relate! The temperature here has plummeted so I stumbled upon this recipe at the perfect time. This looks so simple and nourishing. I love the clean ingredient list. Going to make it this weekend.

    • Killing Thyme
      September 10, 2018 at 11:28 am

      I hope this soup warmed you up and treated you well, Debra!

  • Lizzie
    September 6, 2018 at 6:10 pm

    5 stars
    Since it’s 95-degrees in Boise right now, this will have to wait. Looks fabulous, and kudos to you for using nutmeg, which IMHO is critical to anything containing cauliflower!

    • Killing Thyme
      September 10, 2018 at 11:29 am

      Oh gosh. And here I am groaning at our 80-degree weather. You’ve got me beat there, girl. And thank you! I’m with you on the nutmeg + cauliflower. It just adds this extra warmth, which is always welcome in a soup like this. I hope you love it once you get around to trying it out.

  • Lisa
    September 6, 2018 at 9:06 am

    5 stars
    You are speaking my language with this silky cauliflower soup. We make a lot of cauliflower around here — in mash, rice, roasted, grilled — so I know your soup is going to be a hit with the family. Love that swirl of pesto and crunchy walnuts as a finish. That is a restaurant-worthy dish. Too bad your hubs doesn’t like cauliflower — I’ll take his portion.

    • Killing Thyme
      September 10, 2018 at 11:31 am

      Haha, thanks Lisa! I really hope you and your fam love this soup and all of its additions. I’m not sure I can have cauliflower soup without pesto and walnuts ever again.

  • Gloria
    September 5, 2018 at 6:20 pm

    5 stars
    As much as I do not like the COLD weather…this soup will be the perfect thing to warm us up on a cold day. We love cauliflower, and enjoying it in soup is so delicious. Love how easy this is to make. When it comes to comfort food…it I can eat it out of a bowl I am a happy girl.

    • Killing Thyme
      September 10, 2018 at 11:32 am

      There’s just something a little extra cozy about bowl meals, isn’t there? I think it’s the fact that you can just curl up on the couch with them and hold them near — no plate balancing required!


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