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

  • Caryn

    OMG!! Made this for dinner tonight and it was soooo good!! My husband, who, upon hearing that I was making cauliflower soup, turned up his nose, quickly came running back when he smelled it in the pot. Wow! I made it exactly as written and it was delicious! I might add a few red pepper flakes next time because I like a little spice, but, man!! How many times can I say it was soooo good?!?!

  • Sheila Sparling

    I made this tonight in the crockpot. I roasted the cauliflower the night before and purred it then left it in the fridge overnight. In the morning I made the base and placed it all in the crockpot on low. Mid morning my husband put it on low for four hours and by noon it was getting brown on the edges. It didn’t have the cream colored appearance as in the picture and taste was so so. Felt it needed something more so I probably won’t make it again but I think it could be done but you don’t need to let it sit all day in the crockpot. Just my thoughts!!!! Good luck!!!!

  • Alana

    I was planning on making this for dinner and I saw it makes about 4 servings but I was wondering how much soup you considered a serving. I want to make sure I have enough to feed my whole family.

    • Jaclyn

      Jaclyn Bell

      I’m not the best with servings, I mostly base it off of what my family eats so I can’t remember exactly how much one serving it, sorry!

  • Kim

    Loved this soup!! Subbed a few things w what I had on hand (frozen cauliflower, no cream, more stock, less milk, dried herbs and added bacon). It was delish roasting the cauliflower gave so much flavor. An excellent alternative to a rich potato soup!!!

  • Katherine

    I made this for dinner tonight! I used two heads of cauliflower, added a bag of turnips (sautéed them with the onions) used twice as much garlic, used one 1/2 cups milk + more chicken stock, also added red chili flakes, used only 1/2 cup of Parmesan cheese and the soup was the bomb!!! Thanks for the recipe! It is definitely a keeper! Perfect for winter :-)