Cook/ Easy Weeknight

Creamy Roasted Cauliflower Soup with Blue Cheese

February 22, 2020 (Last Updated: July 2, 2020)

Last Updated on by

This creamy roasted cauliflower soup is packed full of flavor and is so easy to make! Made with bacon and stilton, this hearty low carb soup recipe is also easy to make vegetarian. Cauliflower soup with blue cheese comes together quickly with a few simple ingredients and is a real crowd pleaser. Perfect for meal prep and a freezer meal.

Two bowls of roasted cauliflower soup topped with bacon and herbs

I don’t make soups often, and the main reason for that is that Mr Slow The Cook Down isn’t a huge fan of them. So, when I do, they need to be loaded with flavor and really make your tastebuds spin! I made a Roasted Sweet Potato & Butternut Squash Soup a little while ago, which was then followed by a hearty Thai Chicken and Rice Soup. Both were so flavorsome so I knew I had my work cut out with my next soup!

No word of a lie, we couldn’t stop eating this soup. It totally leaves you wanting more, even if you are full to bursting! It’s perfect comfort food with nutty roasted cauliflower, crispy bacon and creamy and strong blue cheese. Heavenly doesn’t even start to cover it!

How To Make Roasted Cauliflower Soup with Blue Cheese

  1. Roast the cauliflower in the oven until it is soft and browned.
  2. Fry the bacon in a little butter until it is crispy. Remove the bacon, leaving the fat in the pan, and set to one side.
  3. Cook the onion and garlic in the pot with the fat until softened.
  4. Add the cream, stock, blue cheese and roasted cauliflower and bring the pot to the boil. Use an immersion or stand blender to blend the soup until it is smooth and creamy. 

Four shots to show how to make the recipe

What’s the best blue cheese to use in cauliflower soup?

For me, when it comes to blue cheese, there’s no other option other than stilton. Super rich and tangy, it punches you in the tastebuds and I can’t get enough of it! If you prefer your blue cheese on the milder side, you could make this soup with a danish blue or gorgonzola. If you aren’t a big blue cheese fan, then this would also work well with a sharp cheddar.

Why roast the cauliflower?

Cauliflower by itself is a pretty bland vegetable, but when you roast it something amazing happens. Roasting it in a little oil, salt and pepper brings out it’s wonderful nutty and buttery flavors as it caramelizes. It makes this soup wonderfully rich and really adds a depth of flavor to it, as well as making it soft so that it’s easy to blend for the smoothest of soups.

Can you make this cauliflower soup vegetarian?

To make this roasted cauliflower soup vegetarian friendly, simply omit the bacon. Sauté the garlic and onions with the butter rather than the bacon fat, you will still end up with a delicious tasting soup! Swap the chicken stock for vegetable and you are good to go.

Roasted cauliflower soup in a red dutch oven with a wooden spoon

Loaded Cauliflower Soup

I topped this soup with fresh parsley and bacon bits as well as a thin slice of cauliflower that I quickly pan fried. You can easily load up the toppings even more if you are feeling over the top indulgent! Top it with any combination of:

  • Sliced green onions
  • Shredded cheddar cheese
  • Blue cheese crumbles
  • Chopped chives
  • Sour cream

Low Carb Roasted Cauliflower Soup

Now I’m not claiming this to be a healthy soup, but it is low in carbs if you are into that kind of thing. I don’t highly recommend it, but if you want to make this healthier, you can use a lower fat cream or half and half and use a low sodium stock.

What do you serve with cauliflower and blue cheese soup?

This soup is pretty hearty and filling on it’s own, but it’s pretty awesome with some garlic or crusty bread to mop up the bowl!

Tips To Make This Recipe

  • Don’t overcrowd the baking sheet when you roast the cauliflower. The florets shouldn’t be touching other they can create steam and they won’t brown.
  • Be sure to use the rind of the blue cheese, it holds all the flavor!
  • The easiest way to make the soup silky smooth is to blend it in the pot with an emersion blender. Alternatively you can blend it in batches in a stand blender. If you use a stand blender, don’t over fill it and be careful as it will be steaming hot.
  • This soup will keep in the fridge for 4 or 5 days. Once you have made the roasted cauliflower soup, let it cool completely to room temperature and transfer it to an airtight container.
  • This soup freezes really well too and will keep in the freezer for up to 3 months. Defrost it in the fridge overnight before reheating on the stovetop or in the microwave.

Cauliflower soup with fresh herbs and bacon

More blue cheese recipes:

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Soup served in two white bowls and sprinkled with fresh herbs

Creamy Roasted Cauliflower Soup with Blue Cheese

This creamy roasted cauliflower soup is packed full of flavor and is so easy to make! Made with bacon and stilton, this hearty low carb soup recipe is also easy to make vegetarian.
5 from 1 vote
Print Pin Rate
Course: Soup
Cuisine: American
Prep Time: 10 minutes
Cook Time: 45 minutes
Total Time: 55 minutes
Servings: 6 servings
Calories: 589kcal

Ingredients

  • 1 cauliflower
  • 2 tablespoons oil
  • salt and pepper
  • 1 tablespoon salted butter
  • 6 slices bacon cut into smaller pieces
  • 1 large onion sliced
  • 4 garlic cloves minced
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon salt
  • 2 cups 35% heavy whipping cream
  • 3 cups chicken stock
  • 150g stilton (include the rind) grated

Instructions

  • Pre heat the oven to 425ºF / 220ºc.
  • Break the cauliflower into florets and place on a foil lined baking sheet. Add 2 tablespoons of oil and a couple of generous pinches of salt and pepper and mix with your hands so the cauliflower is evenly coated.
  • Roast the cauliflower in the oven for about 35 to 40 minutes until it is soft and browned.
  • While the cauliflower is roasting, you can get on with the rest of the recipe.
  • In a heavy bottomed pan, melt the butter over a high heat and fry the bacon until it is crispy. Remove the bacon, leaving the fat in the pan, and set to one side. Leave the pot on the heat and turn down to a medium heat.
  • Add the onion, garlic and salt and pepper to the pot and cook for 5 to 10 minutes until softened.
  • Add the cream, stock, blue cheese and roasted cauliflower and bring the pot to the boil. Stir occasionally until the cheese has all melted.
  • Use an immersion or stand blender to blend the soup until it is smooth and creamy.
  • Taste and season to taste if needed.
  • Serve with the crispy bacon pieces.

Notes

  • Don't overcrowd the baking sheet when you roast the cauliflower. The florets shouldn't be touching other they can create steam and they won't brown.
  • Be sure to use the rind of the blue cheese, it holds all the flavor!
  • The easiest way to make the soup silky smooth is to blend it in the pot with an emersion blender. Alternatively you can blend it in batches in a stand blender. If you use a stand blender, don't over fill it and be careful as it will be steaming hot.
  • This soup will keep in the fridge for 4 or 5 days. Once you have made the roasted cauliflower soup, let it cool completely to room temperature and transfer it to an airtight container.
  • This soup freezes really well too and will keep in the freezer for up to 3 months. Defrost it in the fridge overnight before reheating on the stovetop or in the microwave.
  • Nutritional values are based on one of six servings and are an estimate only.

Nutrition

Calories: 589kcal | Carbohydrates: 15g | Protein: 15g | Fat: 54g | Saturated Fat: 28g | Cholesterol: 151mg | Sodium: 844mg | Potassium: 614mg | Fiber: 2g | Sugar: 5g | Vitamin A: 1415IU | Vitamin C: 49mg | Calcium: 216mg | Iron: 1mg
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1 Comment

  • Reply
    Tamara Andersen
    March 16, 2020 at 9:56 pm

    5 stars
    I truly don’t understand the vast number of people that turn up their noses at bleu cheese, and stilton is my personal fav! This sounds so good… And I agree 100% on the benefit of roasting cauliflower. I roast it even when I’m just making cauliflower rice.

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