This roasted cauliflower soup has a beautiful nutty flavor and irresistible creamy texture, and it will remind you of delicious Eastern Mediterranean food.
The recipe is easy to make with a few ingredients. You can have it as a delightful appetizer or as a nourishing main course with crispy pita bread, olives, and a side of choice.
Unlike most cauliflower soup recipes that use butter, cheese, or cream, we use creamy-dreamy tahini to give character and substance to this delicious recipe.
Table of Contents
Dietary Note: this recipe is suitable for a vegetarian, vegan, and gluten-free diet.
Don’t have time to read the full blog post? JUMP TO RECIPE HERE!
What is Roasted Cauliflower Soup?
Traditional cauliflower soup is often made with butter, cheese, heavy cream, and nutmeg.
While that’s a delicious way of making cauliflower soup, as we tested and tried the recipe, the soup wasn’t a “hell yes” for us. We weren’t excited to share it with you!
We were tired of the usual butter-nutmeg-cauliflower combination and reliance on not-so-healthy ingredients like butter and cream.
So we developed an entirely new recipe with delicious and wholesome Eastern Mediterranean staples like creamy tahini, fragrant cumin, garlic, fresh lemon juice, and heart-healthy extra virgin olive oil.
Recipes like our whole roasted cauliflower, roasted cauliflower salad, and lentil cauliflower salad were a massive inspiration because you guys seem to love them and because they are nutritious and flavorful.
If you like the very mild cumin aroma, nutty flavor, and irresistible creaminess of hummus, stuffed eggplant, and tahini salad, you will love this naturally vegan cauliflower soup.
Also, like most of our velvety-smooth soup recipes – think of our Turkish lentil soup, butternut squash soup, sweet potato soup, and carrot ginger soup – this recipe is ridiculously easy to make in 3 simple steps.
Cauliflower soup video
Ingredients & Substitutions for Cauliflower Soup
Quantities are in the recipe box at the bottom of the page.
Cauliflower
Use a large head of fresh cauliflower if you can. It has a richer flavor than frozen cauliflower, producing a denser and creamier soup.
If you use frozen cauliflower, we recommend reducing the amount of vegetable broth by half a cup (so from 3 cups down to 2 1/2).
Extra virgin olive oil
We recommend extra virgin olive oil because it has a richer and fruitier flavor than regular olive oil.
Also, its heart is healthy and stable at high temperatures thanks to its high polyphenol content that protects it from oxidation.
Onion
Use white or yellow onion. Substitute a large shallot for the onion.
Garlic
We use fresh garlic. You can grate, mince, or press the garlic.
Cumin
Ground cumin has a fragrant, earthy, and slightly citrusy aroma that goes wonderfully with cauliflower.
The soup won’t taste too much of cumin and we are sure you’ll love it combined with the other ingredients.
Vegetable broth
That’s our liquid of choice for blending the cauliflower.
Tahini
Tahini or tahina (طحينة in Arabic) is an Eastern Mediterranean, Levantine, and Middle-Eastern sesame seed paste with a rich, nutty flavor and a creamy texture.
It’s naturally vegan, gluten-free, and packed with healthy fats and minerals. In this recipe, tahini is the perfect substitute for butter, cheese, and cream.
We recommend choosing a tahini made with 100% hulled sesame seeds, a runny consistency, and light color for best results.
Try to avoid dark and dense tahini because it can be bitter.
Lemon juice
Freshly squeezed lemon juice adds brightness and freshness and elevates the other flavors.
Parsley
We recommend flat-leaf parsley, the variety that is commonly used in Mediterranean recipes, with cauliflower.
Other fresh herbs you can use are fresh cilantro and curly parsley.
Salt & Pepper
Go for sea salt or kosher salt and freshly ground black pepper to taste. You can add a pinch of red pepper flakes for a spicy kick.
Olives
It’s hard to describe how delicious olives are with this roasted cauliflower soup. They are the perfect topping.
We recommend Greek Kalamata Olives, Italian Taggiasche, or Gaeta Olives.
Serves well with
- Warm pita bread or toasted pita chips.
- Homemade croutons or air fryer croutons.
- Crostini or homemade no-knead focaccia.
- Flatbread with garlic and oil.
- Crispy roasted chickpeas or air-fried chickpeas.
How to Make Creamy Cauliflower Soup
US cups + grams measurements in the recipe box at the bottom of the page.
Roast the cauliflower
Preheat the oven to 400°F or 200°C.
Remove the outer leaves of the cauliflower, rinse the head, pat it dry, and chop it into pieces.
Add it to a baking sheet and toss it with extra virgin olive oil, salt, and black pepper.
Roast for 30 minutes or until golden and fork tender.
Make the flavor base
While the cauliflower bakes, make the flavor base. This step is essential as it will add delicious flavor to your roasted cauliflower soup.
Heat the extra virgin olive oil in a large pot or Dutch oven. Add chopped onion and sauté on medium heat for 5 minutes or until translucent. Stir occasionally.
Add grated garlic and ground cumin, and sauté for one more minute or until fragrant.
Now pour in the vegetable broth and simmer for 5 minutes, then turn the heat off and wait for the cauliflower to finish cooking.
Blend the soup
Add most of the roasted cauliflower to the pot with the broth, but set aside a few florets to use as topping.
Blend the soup with an immersion blender until smooth.
Note: If you use a standing blender, we recommend waiting a few minutes for the cauliflower to cool down slightly before blending it in batches that fit your blender.
Add the tahini and blend for one more minute until it’s fully incorporated.
Now stir in freshly squeezed lemon juice, then taste and adjust for salt and acidity, adding more lemon juice if necessary.
You can warm the soup by letting it simmer for two to three minutes if necessary.
Serving Suggestions
We recommend topping the soup with a piece of roasted cauliflower, fresh parsley, olives, and garlic-flavored oil.
To make the flavored oil, heat the extra virgin olive oil in a saucepan. Add thinly sliced garlic and the olives (optionally, add red pepper flakes for some heat) and fry for about a minute. Don’t let the garlic brown.
You can serve this roasted cauliflower soup as a starter or as a main course with bread and side dishes.
It can even be part of a mezze platter with other Mediterranean-tasting recipes.
Serve it with bread
Nothing beats the comfort and cozy vibes of a warm piece of crusty bread dipped in a delicious creamy soup. We recommend trying with:
- Warm pita bread or chips that you can make by toasting pieces of pita bread in the oven or air fryer.
- Homemade No-Knead focaccia.
- Naan flatbread with garlic, olive oil, and parsley.
- Homemade croutons or air fryer croutons.
- Crunchy crostini.
Serve it with a side
- Fresh and crunchy chickpea salad.
- Mediterranean orzo salad.
- Bulgur tabouli or lentil tabouli
- Mediterranean farro salad or barley salad.
- Creamy tahini salad with crispy chickpeas.
Serve it with a spread
- Classic hummus or red pepper hummus.
- Eggplant dips like baba ganoush or mutabal.
- Muhammara.
- Fatteh (crunchy pita, hummus, and yogurt).
Variations
Traditional Cauliflower Soup
A traditional cauliflower soup uses butter, heavy cream, or potatoes to add thickness and creaminess, and nutmeg for aroma.
To make it, roast one large cauliflower tossed in olive oil, salt, and pepper. While it roasts, sauté one chopped onion in olive oil for 5 minutes. Then add 2 cloves of grated garlic, a teaspoon of thyme or rosemary, and a sauté for one more minute.
Add 3 cups of vegetable broth or chicken broth and simmer for 5 minutes. Add the roasted cauliflower, some grated nutmeg, and a couple of tablespoons of butter or a boiled potato.
Blend until creamy, then serve with grated parmesan or gremolata (2 tbsp grated parmesan mixed with 1 tbsp finely chopped parsley and ½ teaspoon lemon zest)
Storage & Make Ahead
Make ahead: roasted cauliflower soup with tahini is an excellent meal prep recipe, as it lasts for days in the fridge and months in the freezer.
Refrigerator: Let the soup cool down at room temperature, then transfer it into an airtight container and store it in the fridge for up to 4 days. It’s best to store it without topping.
Freezer: Let it cool down completely, transfer it to a freezer-friendly container, and freeze it for up to 3 months.
Thaw & Reheat: Defrost over several hours in the fridge. Warm it in a saucepan on the stovetop for 5 minutes or in the microwave for 2 minutes.
Questions
We recommend using tahini to thicken cauliflower soup. It’s a wholesome, nutritious, and heart-healthy ingredient that’s delicious with cauliflower.
You can also thicken by blending in a boiled potato, cheese or vegan cheese, yogurt or non-dairy yogurt, or by letting the soup simmer for a few more minutes.
To make cauliflower soup without milk or cream, we recommend trying tahini, an Eastern Mediterranean sesame seed paste that tastes delicious with cauliflower.
Check out our roasted cauliflower recipe below to see how to use it.
More Soup Recipes
If you are looking for more creamy and nourishing soup recipes, check out these easy recipes:
- Creamy sweet potato soup
- Easy broccoli soup.
- Easy tofu soup with seasonal variations
- Delicious zucchini soup
- Potato leek soup with yogurt
- Earthy Tuscan soup with white beans
- Nourishing and tasty lentil soup or curry lentil soup
- Delicious red lentil curry
- Black bean soup with cilantro and lime.
Or take a peek at our collection with 20+ delightful soup recipes.
More Cauliflower Recipes
For more cauliflower inspiration, check out our:
- Roasted cauliflower or air fryer cauliflower.
- Lemon cauliflower pasta.
- Cauliflower salad with creamy tahini dressing.
- Mediterranean-inspired cauliflower lentil salad.
- Aloo gobi with potatoes and cauliflower.
- Chickpea and cauliflower curry.
- Red pepper pasta with roasted cauliflower.
- Cauliflower rice.
Or take a look at these easy and wholesome cauliflower recipes.
Cauliflower Soup
Equipment
- Immersion blender or standing blender
Ingredients
Roasted Cauliflower
- 1 large head cauliflower of about 2 pounds or 1000 grams cleaned
- 1 tablespoon extra virgin olive oil
- ½ teaspoon salt
- 2 twists black pepper
Other Ingredients
- 1½ tablespoons extra virgin olive oil
- 1 large onion white or yellow, chopped
- 2 cloves garlic grated
- 1 teaspoon ground cumin
- 3 cups vegetable broth
- ¼ cup tahini
- 3 tablespoons lemon juice
To Garnish
- ⅓ cup olives sautéed in extra virgin olive oil and 2 thinly sliced garlic cloves.
- 1 handful parsley best if flat-leaf
Instructions
- Preheat the oven to 400°F or 200°C. Chop 1 large head cauliflower and add it to a baking tray.Toss with 1 tablespoon extra virgin olive oil, ½ teaspoon salt, and 2 twists black pepper and bake for 30 minutes or until fork tender.
- In the meantime, heat 1½ tablespoons extra virgin olive oil in a large pot. Add 1 large onion (chopped) and sauté on medium heat for 5 minutes. Stir often.Add 2 cloves garlic (grated) and 1 teaspoon ground cumin and sauté one more minute.
- Add 3 cups vegetable broth and simmer for 5 minutes. Then add most of the roasted cauliflower. Set some florets aside for garnishing.
- Blend with an immersion blender until smooth.Then, add ¼ cup tahini and blend for a few more seconds until incorporated.
- Now stir in 3 tablespoons lemon juice, then taste and adjust for salt and acidity, adding more lemon juice if necessary.Warm the soup by letting it simmer for two minutes if necessary.
MAKE IT A MEAL
- Serve in bowls and top each portion with a piece of roasted cauliflower, 1 handful parsley, and drizzle with garlic-flavored oil.To make the flavored oil, heat two to three tablespoons of extra virgin olive oil in a saucepan.Add 2 thinly sliced garlic cloves, ⅓ cup olives (optionally, add red pepper flakes for some heat) and fry for a minute.Serve with pita bread or focaccia. For more ideas, check out the "Serving Suggestions" chapter linked in the notes below.
Video
Notes
Nutrition
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Fabulous, tasty and easy to make. Thank you Nico and Louise ๐
Ho omesso olive e limone, che non avevo. Un sapore comunque strepitoso gradito anche da chi, in famiglia, non ama il cavolfiore!
Love this soup
Lovely, delicious soup with the subtle taste of tahini. A definite keeper. Thank you.
Hey Nico & Louise,
Love your recipes and social media channel! For this recipe Iโm wondering could I swap the white potato for white beans like cannellini beans? Iโm also dairy free so was thinking nutritional yeast instead of Parmesan? Iโll give it a go anyway ๐
Hi Emma,
thanks for your message ๐ Yes, you can definitely swap cannellini for potatoes! It’d be delicious and creamy.
Nutritional yeast will also be good in it ๐
Have a great day!
Nico
It was an okay soup. It is filling and healthy but it doesnโt really have a lot of taste. I added some other spices but still a bit bland. Wouldnโt make again.
Thinking of making this and wondering: If one is using potato in the recipe, why not chop and roast it with the other vegetables?
Hi Laura,
Thanks for your message ๐
Yes, you can try baking the potato with the cauliflower.
It might have a different cooking time, though, taking longer than the cauliflower (what you don’t want is burnt/overcooked cauliflower and hard/undercooked potato).
Also, I noticed that the potato is easier to blend when boiled, steamed, or microwaved. The soup gets creamier this way, even with an immersion blender.
I hope this helps ๐
Nico
Splendid!
Thanks Marta! I’m happy you liked the soup. Cheers, Louise