Need a new, healthy and delicious weeknight dinner idea? Try this creamy, roasted cauliflower soup recipe with the flavors of garlic, onion and tender roasted cauliflower minus the calories and fat from cream!

Cauliflower soup garnished with roasted cauliflower and parsley, by Skip to my Lou.
Creamy roasted cauliflower soup is savory and satifsying

Related: Looking for another Vegetarian soup? Have you tried Tomato Wild Rice Soup? Now you need a vegetarian bread, so make this Socca Recipe!

Something magical happens when roasted florets of cauliflower blend with roasted onions, butter, garlic and nutmeg. The vegetable broth ties everything together in the delicious and satisfying bowl of soup.

Ingredients for cauliflower soup: vegetable broth, minced garlic, salt, nutmeg, pepper, a white onion, olive oil, butter and a head of cauliflower, by Skip to my Lou.
These healthy ingredients make such a delicious soup

Simple, Healthy Ingredients for Cauliflower Soup

Creamy Roasted Cauliflower Soup (Low Carb, Gluten Free, Vegetarian, Whole30)

Yields: 6 servings

Prep: 15 minutes | Cook: 50 minutes | Total: 1 hour and 5 minutes

Ingredients:

1 large head of cauliflower, chopped

1 large white onion, sliced

2 tablespoons extra virgin olive oil

2 tablespoons unsalted butter (use ghee instead to be Whole30 compliant)

3 garlic cloves, minced

32 oz vegetable broth

⅛ teaspoon nutmeg (plus extra to taste)

Himalayan pink sea salt and ground black pepper to taste

Optional: fresh parsley for garnish

Instructions For Putting this soup Together

Directions:

1. Preheat oven to 425 degrees F. 

2. Place chopped cauliflower and sliced onion on a large baking sheet. Toss with 2 tablespoons olive oil and season with salt and pepper. Place in preheated oven for 30-35 minutes, flipping the veggies halfway through.

On a black roasting pan, florets of cauliflower and sliced onions ready to roast, by Skip to my Lou.
Cauliflower, onions, salt and pepper ready to roast

3. Place butter in a soup pot over medium heat. Allow butter to melt before adding minced garlic. Cook the garlic for about 30 seconds or until fragrant. 

In a silver soup pot, melted butter and minced garlic cooking, by Skip to my Lou.
Can’t you smell the butter and garlic?

4. Pour vegetable broth into soup pot and turn up the heat to medium-high. 

Vegetable broth being poured into a silver soup pot, by Skip to my Lou.
Add the vegetable stock

5. Add the roasted cauliflower and onion to the soup pot. (Reserve roasted cauliflower if you wish to use for garnish). Season with nutmeg and a little salt and pepper. Bring the soup to a simmer and cook for about 15 minutes.

Roasted cauliflower, onions, and vegetable broth cooking inside a silver soup pot, by Skip to my Lou.

6. Turn off the heat and allow soup to cool slightly before transferring it to a blender. Be sure to work in batches if necessary and do not overfill the blender. If you have an immersion blender, you may use that instead. Pour the soup back into the soup pot if using a blender, and taste. Depending on whether your broth is salted or not, you may need to stir in a generous sprinkling of salt.

In a silver soup pot, creamy cauliflower soup, by Skip to my Lou.
Creamy cauliflower soup almost ready

7. Serve warm garnished with chopped fresh parsley if desired.

A bowl of roasted cauliflower soup, garnished with nutmeg, roasted cauliflower and parsley, served in a white soup bowl, by Skip to my Lou.
Keep some roasted cauliflower to use as a garnish with the parsley

Substitutions and Storage Suggestions

  • Substitute olive oil for butter to make this soup vegan.
  • Red pepper flakes add a kick of heat.
  • If you do not have a soup pot, a Dutch oven or very large saucepan could work.
  • Be careful to simmer the soup as the recipe indicates, these ingredients do not need to come to a full rolling boil.

*Store soup in an airtight container in the refrigerator for up to 4 days.

Prep Time 15 minutes
Cook Time 50 minutes

Ingredients  

  • 1 Large Head of Cauliflower Chopped
  • 1 Large White Onion Sliced
  • 2 tbsp Olive Oil Extra Virgin
  • 2 tbsp Unsalted Butter use ghee instead to be Whole30 compliant
  • 3 Garlic Cloves Minced
  • 32 oz Vegetable Broth
  • 1/8 tsp Nutmeg Extra to taste
  • Himalayan Pink Salt To taste
  • Ground Black Pepper To taste
  • Fresh Parsley For garnish (Optional)

Instructions 

  • Preheat oven to 425 degrees F. 
  • Place chopped cauliflower and sliced onion on a large baking sheet. Toss with 2 tablespoons olive oil and season with salt and pepper. Place in preheated oven for 30-35 minutes, flipping the veggies halfway through.
  • Place butter in a soup pot over medium heat. Allow butter to melt before adding minced garlic. Cook the garlic for about 30 seconds or until fragrant. 
  • Pour vegetable broth into soup pot and turn up the heat to medium-high. 
  • Add the roasted cauliflower and onion to the soup pot. (Reserve roasted cauliflower if you wish to use for garnish). Season with nutmeg and a little salt and pepper. Bring the soup to a simmer and cook for about 15 minutes.
  • Turn off the heat and allow soup to cool slightly before transferring it to a blender. Be sure to work in batches if necessary and do not overfill the blender. If you have an immersion blender, you may use that instead. Pour the soup back into the soup pot if using a blender, and taste. Depending on whether your broth is salted or not, you may need to stir in a generous sprinkling of salt.
  • Serve warm garnished with chopped fresh parsley if desired.
Servings: 6
Author: Mary Ann

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