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Creamy Roasted Cauliflower Soup

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  • Rich and creamy roasted cauliflower soup made with leek, cremini mushroom, and cheddar cheese.

    Creamy Roasted Cauliflower Soup in a soup bowl.

    If you love Food Network as much as I do, then you probably know about the show “Chopped“. Today I’m super excited to be participating in Food Network’s Chopped At Home Challenge, creating a comfort dish with secret “basket” ingredients. Come join me and enter the Chopped At Home contest!

    Food Network’s Chopped At Home Challenge

    Chopped At Home Challenge

    Ready to compete like a Chopped Champion? Here’s your chance to enter the competition! In the Chopped at Home Challenge, there will be three rounds of online competition each followed by a voting period. There will be 4 finalist spots for contestants to win by entering a recipe using mystery basket ingredients.

    In addition to going to NYC to face off in the Chopped kitchen at Food Network headquarters, four finalists will each win $5,000. And, to top it all off, the final winner will receive $10,000, just like a real Chopped champion!

    Round 1: Comfort Food

    Round 1 theme is comfort food. What’s your favorite comfort food? For me, comfort food means a savory soup that warms up my heart and soul, especially in wintertime. Now check out the required ingredient and the secret “basket” ingredients for Round 1 below.

    Required Ingredient: Sargento® Sharp Cheddar Fine Cut

    Secret Basket Ingredients: cauliflower, cremini mushrooms, and leeks.

    Creamy Roasted Cauliflower Soup in a bowl and ingredients on a table.

    Creamy Roasted Cauliflower Soup

    For the first Chopped At Home Challenge, I made this delicious and rich Creamy Roasted Cauliflower Soup with my favorite roasted cauliflower.

    Growing up in Japan, I had rarely eaten any “roasted” food because Japanese cooking involves mostly cooking on the stove-top.

    Since I came to the U.S., I fell in love with roasting vegetables, and cauliflower is of my top favorite ingredients for roasting. Roasted vegetables add a whole array of new flavor profiles and you can definitely use other vegetables of your choice as well.

    Making Creamy Roasted Cauliflower Soup

    This delicious vegetarian soup is very easy to make, but don’t let the simple ingredient deceive you. It has so many wonderful essences from the roasted cauliflower, and the leek and cremini mushrooms add to it with their umami flavors. All the ingredients blend really well together and I added Sargento’s shredded sharp cheddar cheese in the end to add a kick to the dish. I like using Sargento’s cheese because they are cut from blocks of 100% real, natural cheese.

    Fun Fact: If you are wondering what cremini mushrooms are, they are basically the older version of the white mushrooms. As these mushroom mature even more, they become portabella mushrooms, so cremini mushroom are also called baby bella.

    My family absolutely loved this soup and surprisingly my children asked for refills even though it’s all vegetables. I hope you will enjoy this soup as much as my family does.

    Creamy Roasted Cauliflower Soup in a soup bowl.

    I hope you will enjoy making this Creamy Roasted Cauliflower Soup recipe!

    Don’t want to miss a recipe? Sign up for the FREE Just One Cookbook newsletter delivered to your inbox! And stay in touch on Facebook,Google+, Pinterest, and Instagram for all the latest updates. Thank you so much for reading, and till next time!

    Don’t like Cauliflower? Try this recipe!

    Chicken and Corn Chowder in a white soup bowl.

    Chicken Corn Chowder


    4.43 from 7 votes
    Creamy Roasted Cauliflower Soup |
    Creamy Roasted Cauliflower Soup
    Prep Time
    10 mins
    Cook Time
    50 mins
    Total Time
    1 hr

    Rich and creamy roasted cauliflower soup made with leek, cremini mushroom, and cheddar cheese.

    Course: Soup
    Cuisine: Japanese
    Keyword: creamy soup, vegetable soup
    Servings: 6 bowls
    Author: Nami
    • 1 head cauliflower
    • 2 Tbsp extra virgin olive oil (for roasting)
    • 2 tsp kosher/sea salt (I use Diamond Crystal; Use half for table salt) (for roasting)
    • freshly ground black pepper (for roasting)
    • 2 leeks (white and light green parts only)
    • 5 mushrooms (I use cremini)
    • 2 Tbsp unsalted butter
    • 2 cloves garlic
    • 1 bay leaf
    • pinch kosher/sea salt (I use Diamond Crystal; Use half for table salt) (for sautéing leeks)
    • 1 tsp thyme
    • 3 Tbsp all-purpose flour (plain flour)
    • 2 cups milk (I use whole milk)
    • 3 cups vegetable broth (you can substitute with chicken broth)
    • kosher/sea salt (I use Diamond Crystal; Use half for table salt)
    • freshly ground black pepper
    • 1/2-1 cup shredded sharp cheddar cheese
    • Chives (optional for garnish)
    • dash extra virgin olive oil (for garnish)
    1. Gather all the ingredients.

      Creamy Roated Caulifower Soup Ingredients
    2. Preheat oven to 400°F (200°C). Cut the cauliflower into florets and place them on a large baking sheet.
      Creamy Roasted Cauliflower Soup 1
    3. Drizzle with olive oil (2 Tbsp.) and sprinkle kosher salt (2 tsp.) and freshly ground black pepper.
      Creamy Roasted Cauliflower Soup 2
    4. Toss so that the florets are lightly coated with oil. Spread the florets out into a single layer on the baking sheet. Place the cauliflower in the oven, uncovered, for 20-30 minutes, or until the top is lightly golden brown.
      Creamy Roasted Cauliflower Soup 3
    5. When the cauliflower is done roasting, set aside.
      Creamy Roasted Cauliflower Soup 4
    6. While cauliflower is in the oven, cut a quarter inch off the bottom of the leeks, removing the roots completely and then slice the leeks in half lengthwise.
      Creamy Roasted Cauliflower Soup 5
    7. Rinse each half under running water. Use your fingers to flex the leek and rinse any dirt or sand that may be clinging between the layers while still keeping the layers relatively intact. Line up the halves and cut into ½ inch (1.3 cm) pieces.
      Creamy Roasted Cauliflower Soup 6
    8. Clean the cremini mushrooms with a slightly damp paper towel or kitchen cloth to remove any dirt. Remember mushrooms absorb water like sponges, and they won't brown nicely when cooked if they absorb too much water. If you have to clean A LOT of mushrooms, quickly rinse with running water and pat dry with paper towel. NEVER soak the mushrooms in water.
      Creamy Roasted Cauliflower Soup 7
    9. In a large pot (I use a Dutch oven), heat 2 Tbsp. butter on medium heat. Crush 2 cloves garlic (or add 2 cloves minced garlic) into the pot. Tear a bay leaf in half (for more aroma & flavor) and add to the pot.
      Creamy Roasted Cauliflower Soup 8
    10. Once the ingredients become fragrant, add the chopped leek and a pinch of kosher salt and sauté until tender. The salt will help the leeks become tender faster.

      Creamy Roasted Cauliflower Soup 9
    11. Once the leeks are tender, add the cremini mushrooms and fresh thyme. Pinch the stem near the top with the fingers of one hand. Pinch down the length of the stem with the fingers of the other hand from top to bottom and the leaves should break off where they meet the stem.
      Creamy Roasted Cauliflower Soup 10
    12. When the mushrooms are tender, add 3 Tbsp. all-purpose flour. Continuously stir the bottom of the pan so that the flour doesn't burn.
      Creamy Roasted Cauliflower Soup 11
    13. When you don't see any bits of flour, gradually add 2 cups milk while stirring the bottom of the pan. Then add 3 cups vegetable broth.
      Creamy Roasted Cauliflower Soup 12
    14. Add the roasted cauliflower and bring to a low simmer, NEVER a full boil. Once the soup reached to a low simmer, cover and simmer for 20 minutes (once again, don't let it boil!). Note: when you add milk to the soup, you don't want to boil the soup; otherwise the milk will curdle. Using full fat milk helps prevent curdling.
      Creamy Roasted Cauliflower Soup 13
    15. Turn off the heat and remove bay leaf. Puree the soup until it reaches your desired consistency with an immersion blender (or you can transfer to a blender). If you use a regular blender, fill it no more than half way with the soup (do in batches). Place the lid on the blender and cover the hole with a towel. Start blending and slowly lift up the towel to let some of the steam escape.
      Creamy Roasted Cauliflower Soup 14
    16. Add ½ to 1 cup sharp cheddar cheese and stir until melted. Taste the soup and season with kosher salt and freshly ground black pepper to your taste. If you need to reheat the soup, bring the soup to a low simmer on medium low heat, not a full boil. Serve and top with chopped chives and a dash of olive oil. Enjoy!
      Creamy Roasted Cauliflower Soup 15
    Recipe Notes

    Recipe by Namiko Chen of Just One Cookbook. All images and content on this site are copyright protected. Please do not use my images without my permission. If you'd like to share this recipe on your site, please re-write the recipe and link to this post as the original source. Thank you.

    Full Disclosure: This is a sponsored conversation written by me on behalf of Sargento. The opinions and text are all mine.

    Just One Cookbook is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to This post may contain affiliate sales links, please see privacy policy for details.

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