This Creamy Cauliflower Soup Has a Smart Secret (2024)

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Sheela Prakash

Sheela PrakashSenior Contributing Food Editor

Sheela is the Senior Contributing Food Editor at Kitchn and the author of Mediterranean Every Day: Simple, Inspired Recipes for Feel-Good Food. She received her master's degree from the University of Gastronomic Sciences in Italy and is also a Registered Dietitian.

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published Sep 28, 2021

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This Creamy Cauliflower Soup Has a Smart Secret (1)

This easy, creamy cauliflower soup, flavored with garlic and thyme, is naturally dairy-free and vegan.

Serves4Makesabout 6 cupsPrep15 minutesCook45 minutes to 52 minutes

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This Creamy Cauliflower Soup Has a Smart Secret (2)

This deeply savory cauliflower soup is so creamy and comforting, you’d never guess it’s dairy-free. Rather than milk, cream, or even a dairy alternative like coconut milk, this soup gets all of its richness from cauliflower itself. You’ll roast it first to deepen its naturally nutty flavor, then blend it with broth to create ultra-smooth results. This is the soup you’ll want to eat all fall long.

How Do You Thicken Cauliflower Soup?

There are many ways to thicken cauliflower soup. Some recipes lean on heavy cream, half-and-half, milk, or coconut milk to thicken the soup and make it creamy. Others blend in cooked potatoes with the cauliflower. My favorite way to thicken cauliflower soup, though, is to simply let the cauliflower do the work. When cooked and blended with chicken or vegetable broth, cauliflower’s natural starches make the soup plenty thick, rich, and creamy without the need for much else.

How Do You Fix Bland Cauliflower Soup?

Bland cauliflower soup is a result of a lack of seasoning. Here’s how to ensure every bowl is packed with flavor.

  • Season twice with salt and pepper: You’ll start by seasoning the cauliflower florets with salt and pepper before roasting. Then, season again when the roasted florets are combined with broth on the stovetop. Your soup should be well-seasoned if you follow this approach, but it’s always a good idea to taste it before serving in case your personal preference is a little more salt, pepper, or both.
  • Add lots of aromatics. Leaning hard on aromatics is another way to load cauliflower soup with flavor. Here, garlic, onion, and fresh thyme lend tons of savory flavor to the soup. Since cauliflower is such a mild vegetable, it can handle a heavy hand.
  • Finish with lemon. A big squeeze of lemon juice stirred into the soup right before serving brightens it up. Acid helps draw out flavor and ensures every spoonful of this soup is balanced and interesting.

Can You Freeze Puréed Cauliflower Soup?

Since this cauliflower soup doesn’t contain any cream, which can become gritty when frozen and thawed, it freezes exceptionally well. Simply let the soup cool, transfer it to an airtight container, and freeze it for up to three months. The night before you want to enjoy it, transfer the container to the refrigerator to slowly thaw overnight, then reheat the soup in a saucepan over medium heat.

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Cauliflower Soup

This easy, creamy cauliflower soup, flavored with garlic and thyme, is naturally dairy-free and vegan.

Prep time 15 minutes

Cook time 45 minutes to 52 minutes

Makes about 6 cups

Serves 4

Nutritional Info

Ingredients

  • 1 large head

    cauliflower (about 2 pounds)

  • 4 tablespoons

    olive oil, divided

  • 2 teaspoons

    kosher salt, divided, plus more as needed

  • 1/2 teaspoon

    freshly ground black pepper, divided, plus more as needed

  • 1

    medium yellow onion

  • 2 cloves

    garlic

  • 1 small bunch

    fresh thyme

  • 1/2

    small lemon

  • 1 (32-ounce) box

    low-sodium vegetable or chicken broth

Instructions

  1. Arrange a rack in the middle of the oven and heat the oven to 425°F.

  2. Cut the florets and stem of 1 large head cauliflower into bite-sized (about 1-inch) pieces. Place on a rimmed baking sheet, drizzle with 2 tablespoons of the olive oil, season with 1 teaspoon of the kosher salt and 1/4 teaspoon of the black pepper, and toss to coat. Spread into an even layer.

  3. Roast, tossing halfway through, until tender and caramelized at the edges, 20 to 25 minutes total. Meanwhile, dice 1 medium yellow onion and mince 2 garlic cloves. Strip the leaves from 1 small bunch fresh thyme until you have 1 tablespoon. Squeeze 1/2 small lemon to get 1 tablespoon juice.

  4. Heat the remaining 2 tablespoons olive oil in a large pot over medium heat until shimmering. Add the onion and garlic and sauté until softened and translucent, 5 to 7 minutes. Remove the pot from the heat.

  5. When the cauliflower is ready, reserve 4 florets for garnish. Transfer the remaining cauliflower to the pot. Add 1 box (32 ounces) low-sodium broth, half of the thyme leaves, the remaining 1 teaspoon kosher salt, and remaining 1/4 teaspoon black pepper. Stir to combine, then place over high heat and bring to a boil.

  6. Reduce the heat to medium. Cover with the lid slightly ajar and simmer until the flavors meld and the cauliflower is very tender, about 15 minutes.

  7. Remove from the heat and add the lemon juice. Use an immersion blender to blend directly in the pot until smooth. (Alternatively, blend in batches in a regular blender.) Taste and season with more kosher salt and black pepper as needed. Divide the soup between 4 bowls and garnish with the reserved roasted cauliflower florets and thyme leaves.

Recipe Notes

Storage: Leftovers can be refrigerated in an airtight container for up to 5 days or frozen for up to 3 months.

Filed in:

Dairy-Free

Gluten-Free

Ingredient

soup

vegan

vegetarian

This Creamy Cauliflower Soup Has a Smart Secret (2024)

FAQs

What makes soup more creamy? ›

Possibilities include cream, coconut milk, yogurt, or even pureed avocado. If you choose coconut milk, be aware that it will impart a sweet, coconut flavor, which might not be right for every soup. Yogurt will add tanginess.

How to thicken cream of cauliflower soup? ›

How to thicken cauliflower soup: Nobody wants an overly-thin soup. We thicken our cauliflower soup by blending the entire soup in batches using a blender or immersion blender once cooked. This (in addition to our heavy cream) helps thicken our soup up nicely to a hearty texture.

Why is my cauliflower soup tasteless? ›

How Do You Fix Bland Cauliflower Soup?
  • Season twice with salt and pepper: You'll start by seasoning the cauliflower florets with salt and pepper before roasting. Then, season again when the roasted florets are combined with broth on the stovetop. ...
  • Add lots of aromatics. ...
  • Finish with lemon.

What is the secret to soup? ›

7 Tips for Successful Soup Making
  • Use a Sturdy Pot. It is worth investing in a heavy pot with a thick bottom to use for making soup. ...
  • Sauté the Aromatics. ...
  • Start with Good Broth. ...
  • Cut Vegetables to the Right Size. ...
  • Stagger the Addition of Vegetables. ...
  • Keep Liquid at a Simmer. ...
  • Season Just Before Serving.
Oct 9, 2022

What is the secret ingredient to thicken soup? ›

Soup Thickening Method: Cornstarch Slurry

About this method: One of the most common ways to thicken sauces and soups is with a starch-based slurry, and cornstarch is a popular choice. Cornstarch is flavorless, easy to mix up, and versatile, which makes it a go-to pantry ingredient.

How can I deepen my soup flavor? ›

"If your broth is lacking in savory richness, try adding roasted onion, tomato paste, mushrooms, seaweed, soy sauce, or miso. These ingredients add umami flavor and depth to broth," she says. The choice of ingredient depends on the recipe, though.

How do you make mashed cauliflower less watery? ›

The trick to the perfect cauliflower mash is to drain it really well and then let any remaining water evaporate in a pan on medium heat for 5-6 minutes before mashing. If you don't do this step, you definitely can have a very watery mash.

Is it better to thicken soup with flour or cornstarch? ›

It's important to note that cornstarch has twice the thickening power of flour. If you need to substitute cornstarch to thicken liquid in a recipe that calls for ¼ cup (four tablespoons) flour, you only need two tablespoons cornstarch.

Can you use milk instead of cream for soup? ›

You can use milk instead of heavy cream, but you won't get quite the same flavor or consistency.

How to fix bitter cauliflower soup? ›

Over-cooking cauliflower can make it bitter. If your soup tastes bitter, you can add a little more salt to help with the bitterness. If you don't want to add any more salt, a little sugar or something sour, lemon juice, or vinegar to help offset the bitterness.

What gives vegetable soup that depth of flavor? ›

Tips for Flavorful Vegetable Soup

Flavor the base: We add Italian seasoning and tomato paste to the aromatics and warm them up to bring the seasonings back to life. You could use fresh herbs like thyme or rosemary, or even add a Parmesan rind for more flavor.

How do you fix soup that has no flavor? ›

Perk up a Bland Soup With Simple Pantry Staples

Add a splash of vinegar (any kind!), or a squeeze of citrus. Chances are, you could use a little more salt. Go ahead—it's ok. Salt perks up flat flavors and helps balance out bitter-tasting ingredients.

What is the most important ingredient in soup? ›

For clear, brothy soups, stock is your most important ingredient. If you want to make a good soup, you need to use an excellently flavored stock — otherwise, the entire pot could be tasteless.

What gives soup more flavor? ›

I'd use a base of onions, celery, and garlic. Then I would use spices and herbs to give the soup a specific flavor: an Italian spice mix, or a Mexican mix, or even a curry mix. I'd put in fresh seasonal vegetables and plenty of fresh-ground pepper. I might add a small can of salt-free tomato sauce or some coconut milk.

How do you make soup creamier and thicker? ›

6 ways to thicken soup:
  1. Blend all or part of it. If you've made a broth with chunks of vegetable in it, such as minestrone soup, then pour the soup through a sieve. ...
  2. Add cream or yogurt. ...
  3. Add flour or cornflour. ...
  4. Use a butter and flour paste. ...
  5. Blend in bread. ...
  6. Add lentils or rice.

Does adding milk to soup make it creamy? ›

Yes, you can definitely add cream to your soup. Whether you use a few tablespoons or a few cups, cream gives soup a silky mouthfeel and rich flavor. You can definitely add milk or other dairy as well, though it will taste gradually less creamy as you go down in percent.

Does sour cream make soup creamier? ›

Yes. In fact, a dollop of sour cream in beef vegetable and tomato vegetable soups can work wonders. If you like sour cream, try Lebne yogurt.

Does milk make soup thicker? ›

To thicken soup, try adding a dash of cream or a spoonful of yogurt. Or, you can add coconut milk for a vegan-friendly option. If you want to give the soup a creamy, savory flavor, try stirring in some beaten eggs to thicken it. You can also add starches, like chunks of bread, oats, or flour, to thicken a hardy soup.

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