Roasted Cauliflower White Cheddar Soup

Published September 19, 2013. Updated August 28, 2024

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Roasted Cauliflower White Cheddar Soup is creamy, cheesy, and comforting for chilly weeknight dinners. Roasted cauliflower, creamy dairy, tangy white cheddar, savory garlic, and fresh herbs make this a low-carb soup that is perfect for game day, busy weeknight meals, or a comforting lunch on a rainy day. Try this cauliflower cheese soup ASAP!

If there is one of my soup recipes that you must try this Fall, please let this be it! This soup is equally as delicious, if not better, than broccoli cheese soup. I wouldn’t have thought it would be as good because cauliflower seems quite bland, but when you roast it in a blazing hot oven, it takes it to a whole new level.

Roasted Cauliflower White Cheddar Soup

The cauliflower florets seem to caramelize on the edges and bring a light sweetness to the soup. It was hard for me not to eat all of the roasted cauliflower before adding it to the soup, I love the stuff! I might try adding other vegetables, like carrots or potatoes, to make this a more healthy vegetable soup. (I recommend you blend it with an immersion blender after the simmer stage if you prefer a smoother texture.)

Roasted Cauliflower White Cheddar Soup | Cooking Classy

Creamy Cauliflower Soup

I loosely adapted the recipe for this from the Broccoli Cheese Soup I have posted (now they’re both my favorite soups), but I did however adjust the ingredients to make this one just a bit lower in fat.

Since the cauliflower was able to offer some creaminess to the soup after pureeing, I didn’t need as much of the roux mixture (the butter and flour) and I also used a little less cheese. You could definitely make this keto or gluten free by decreasing the flour in your roux or using a flour substitute.

Nutrition wasn’t really in mind when I added the lesser amount of cheese though, I just wanted some of the roasted cauliflower flavor to really show through. Truthfully, you could leave the cheese out altogether and still have an irresistibly tasty soup (and I won’t say that often about cheese, I’m a cheese fanatic).

This soup is also wonderful served in the homemade bread bowls I posted just yesterday. Top it with some bacon bits and more sharp cheddar cheese and enjoy!

Roasted Cauliflower White Cheddar Soup | Cooking ClassyRoasted Cauliflower White Cheddar Soup | Cooking Classy

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4.66 from 23 votes

Roasted Cauliflower White Cheddar Soup

The tastiest cauliflower soup! It has lots of flavor thanks to roasting the cauliflower and the delicious cheeses.
Servings: 4 Servings
Prep10 minutes
Cook30 minutes
Ready in: 40 minutes

Ingredients

  • 1 large head cauliflower (2 - 2 1/2 lb), cored and chopped into small, bite size pieces
  • 2 Tbsp olive oil
  • Salt and freshly ground black pepper
  • 3 Tbsp butter
  • 1 cup finely chopped yellow onion
  • 3 1/2 Tbsp all-purpose flour
  • 1 clove garlic , minced
  • 3 cups milk
  • 1 (14 oz) can low-sodium chicken broth
  • 1/2 cup heavy cream
  • 1 tsp dried parsley or 1 Tbsp chopped fresh
  • 1/4 tsp (slightly heaping) dried thyme or 1 tsp chopped fresh
  • 1 bay leaf
  • 1/4 tsp granulated sugar
  • 4 oz shredded sharp white cheddar cheese , shredded (1 cup), plus more for serving if desired
  • 1 oz finely grated parmesan cheese (slightly packed 1/4 cup)

Instructions

  • Preheat oven to 425 degrees. Place cauliflower on baking sheet, drizzle with olive oil and toss to evenly coat, then spread into an even layer and season lightly with salt and pepper.
  • Bake in preheated oven until golden, about 25 minutes. Remove from oven and set aside.
  • In a large pot, melt butter over medium heat. Add in onion and saute until tender, about 4 - 5 minutes. Add in flour and cook, stirring constantly 1 1/2 minutes, adding in garlic during last 30 seconds of cooking.
  • While whisking, slowly pour in milk followed by chicken broth and cream. Add in parsley, thyme, bay leaf, sugar, roasted cauliflower and season soup with salt and pepper to taste (I used 1/2 tsp salt but this may vary depending on how much salt you added to your cauliflower and how much salt you prefer).
  • Bring to a boil, stirring constantly, then reduce heat to low. Puree 3 cups of the soup in a blender (being careful as your working with hot liquids) and return to soup in pot.
  • Remove from heat and stir in sharp white cheddar and parmesan cheese. Serve warm garnished with additional shredded white cheddar and serve with fresh bread or croutons if desired.
  • Recipe Source: Cooking Classy, adapted lightly from my Broccoli Cheese Soup
Nutrition Facts
Roasted Cauliflower White Cheddar Soup
Amount Per Serving
Calories 523 Calories from Fat 369
% Daily Value*
Fat 41g63%
Saturated Fat 22g138%
Cholesterol 113mg38%
Sodium 465mg20%
Potassium 445mg13%
Carbohydrates 20g7%
Fiber 1g4%
Sugar 11g12%
Protein 18g36%
Vitamin A 1230IU25%
Vitamin C 16.4mg20%
Calcium 532mg53%
Iron 0.8mg4%
* Percent Daily Values are based on a 2000 calorie diet.
Nutrition values are estimates only. See full disclaimer here.

 

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158 Comments

  • Kate halstead

    Made this for dinner -turned out great! Add quick a bit more pepper and some chili powder and a dash of paprika to zing it up a bit!

  • Liz

    I made this last night and it was so good. :) My husband liked it too, but suggested adding some crumbled up crispy bacon. Just a suggestion that I plan on doing next time! Bacon makes most things better, right?

    • Jaclyn

      Jaclyn Bell

      Yes I love bacon. I’m so glad you and your husband liked it Liz! Thanks for your comment!

  • Marianne

    This was so good! I added some butternut squash to the cauliflower to roast. I also pureed the entire soup. Delicious!

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  • Maggie J

    Yum! I made this for dinner tonight and it was a hit. I didn’t have cream, so I used white wine. Tasty!

  • Sandy

    There is only one way I eat cauliflower and that is Jonathan Waxman’s Oven Roasted Cauliflower with Breadcrumbs, that is until now! This soup was amazing! Truly delicious and so easy to make. The only change I made was to puree the entire thing to make one smooth soup. I make the late fall/winter soup Sunday in my house. This will definitely be on this years roster. Can’t wait to try the broccoli cheese soup. Thanks again for the yumminess!

    • Jaclyn

      Jaclyn Bell

      I’m so glad you liked this soup Sandy! You’ve got me wanting to try that recipe now I’ll have to look it up. Thanks for your comment, I hope you like the broccoli cheese soup too!

  • Shari Kelley

    I love cauliflower, and can’t wait to try this soup! I like the bread bowl idea, too. Thanks for sharing the recipes.