Easy, Creamy Keto Mushroom Soup

Must Try

Success! Watch your inbox for delicious recipes.

This easy keto mushroom soup is super creamy without being overly rich. It tastes so much better than any store bought cream of mushroom soup! A satisfying and healthy low carb soup that’s ready in under 30 minutes and only 5.1g net carbs per serving.

two plates with mushroom soup decorated with mushrooms

Ready-made soups may be convenient, but they often contain hidden sugars and carbs plus preservatives. In my opinion, homemade soups always win. Not only are they healthier because you’re using fresh low carb ingredients, they always taste so much better too!

This creamy mushroom soup is a prime example. It’s rich and nourishing, packed with flavour yet without the overload of cream you’ll often find in mushroom soup recipes.

Regular cream of mushroom soup often contains a thickener like cornstarch or flour. This recipe, on the other hand, is gluten free. We’re simply pureeing the mushrooms and other vegetables to make the soup deliciously creamy.

You can make this recipe on the stove like I did. Alternatively, make it in the instant pot if you want to save time!

Serve with keto dinner rolls or a slice of toasted and buttered low carb bread.


ingredients for mushroom soup measured into bowls
  • Butter
  • Onion
  • Celery
  • Mushrooms – white or brown mushrooms. Whether it’s baby bella, cremini or portobello – all work! Make sure they are cleaned and cubed
  • Garlic – Fresh is always best!
  • Chicken Stock – For best results, use a good quality chicken broth. However, a stock cube will also do the job.
  • Double Cream (that’s heavy cream in the US)
  • Thyme, Bay Leaf, Pepper & Salt

Optional extra: Add ⅓ cup or 10 grams of dried porcini mushrooms. These really elevate the taste! They need to be soaked for 5 minutes in hot water and then washed well before you add them to the soup.

How to make keto mushroom soup

onion and celery in a saucepan

Heat the butter in a large saucepan. Once hot, add the onion, celery, thyme and bay leaf and fry over medium heat for 2 minutes. Then add the mushrooms and garlic and cook for 5 – 7  minutes until golden brown.

mushrooms, celery and onion in a saucepan

Pick out about ¼ cup of mushrooms and place to one side to decorate the soup bowls later.

Add the chicken stock (and porcini mushrooms, if using) and simmer for about 10 – 15 minutes.

mushrooms in a saucepan and a spatula

Add the heavy whipping cream and turn off the heat. Remove the bay leaf and transfer to a blender. Blitz until smooth. Taste and adjust the seasoning to your liking. 

blended mushroom soup in a food processor

Top with reserved mushrooms, a swirl of cream, extra virgin olive oil, cracked black pepper and fresh thyme.

Low carb mushroom soup in the Instant Pot

Put the pressure cooker on the Sauté setting. Add the onion, celery, thyme and bay leaf and cook for a couple of minutes. Add the chopped mushrooms and garlic and cook for 5 minutes until tender and lightly browned. Stir regularly.

Pick out about ¼ cup of mushrooms and place to one side for the top.

Pour in the chicken broth. Put the lid on the Instant Pot and seal. Select manual and set the timer to 5 minutes. The pot will take a few minutes to come to pressure.

When the cook cycle has ended, allow the pot to sit for 10 minutes, Then turn the knob and do a quick release of the remaining steam.

Add the cream and proceed as per recipe.

Mushroom top tips

Choosing mushrooms: You can buy sliced mushrooms for this recipe of you want to save time. I prefer to buy mine whole because that way they’re fresher. Check that the surface of the mushrooms is dry, firm and smooth.

Cleaning: Wash mushrooms in cold water to remove any dirt. Some people use a dedicated toothbrush for this, but I’m keeping it simple and just use my hands or a knife. The important thing is to wash them immediately before cooking so they don’t turn slimy (mushrooms absorb water!).

Storage: Always in the fridge and never in air-tight containers! Mushrooms like to “breathe”, which means it’s best to store them in moisture-absorbing packaging that allow for air flow. This means either store them in the packaging they come in or use a paper bag which you leave slightly open.

Carbs in mushrooms

Mushrooms are naturally keto friendly! They are low in carbs and high in fibre. White button mushrooms are the lowest at just 3 grams of carbs per 100 grams or 1 cup. Read more about the nutritional benefits of mushrooms here!

keto mushroom soup in a bowl

Recipe variations

For a dairy free version of this keto mushroom soup use olive oil instead of butter and leave out the cream. I like to add a little Violife vegan feta sprinkled on top if I’m not adding cream. 

To make the recipe vegetarian, use a vegetable stock instead of the chicken broth.

Want it spicy? Add smoked paprika, a pinch of cayenne pepper or red chili pepper flakes.

Like your soup extra rich? Use ½ cup heavy cream and / or add 4oz or 120 grams of cream cheese at the end. In this case, cook the soup an additional 10 minutes after adding the cream to reduce the liquid and intensify the taste.

If you prefer a chunkier soup, only puree half of the soup.

Mushroom soup tastes delicious topped with grated parmesan cheese or stir in a tablespoon of nutritional yeast.

Other possible toppings: chopped parsley or chives.

More keto soup recipes

These belly-warming recipes are like a hug in a bowl!

Keto Vegetable Soup

Creamy Keto Roasted Cauliflower Soup

Low Carb Butternut Squash Soup

Keto Roast Chicken Soup

Low Carb Keto Turkey Soup

Tried this recipe? Give it a star rating below!

★ STAY IN TOUCH on FACEBOOKPINTEREST and INSTAGRAM  for more great food and join my NEWSLETTER for the latest updates and a FREE EBOOK.★ 

a plate with keto mushroom soup decorated with chopped mushrooms and greens

Keto Mushroom Soup

from sugarfreelondoner.com

Simply the best keto mushroom soup! Creamy and tasty but without an overload of dairy cream. Flavoured with thyme and garlic, it’s a classic you’ll fall back on time and time again. I like to drizzle it with olive oil and herbs and serve with keto dinner rolls.

Prep Time 10 mins

Cook Time 15 mins

Total Time 25 mins

Course Main Course

Cuisine British

Note: The servings slider only changes the first amount in each line and not any subsequent amounts. Please make your own calculations where necessary. ***As an Amazon Associate I earn from qualifying purchases.


  • Heat the butter in a large saucepan. Once hot add the onion, celery, thyme and bay leaf and fry on a medium heat for 2 minutes.

  • Add the mushrooms and garlic and cook for 5 – 7 minutes until golden brown.

  • Pick out about ¼ cup of mushrooms and place to one side for the topping. Add chicken stock and simmer for about 10 – 15 minutes.

  • Add cream and turn off the heat. Remove the bay leaf and transfer to a blender. Blitz until smooth. Taste and adjust seasoning to your liking.

  • Top with reserved mushrooms, swirl of cream, olive oil, cracked black pepper and fresh thyme.

Success! Watch your inbox for your free guide.


5.1g net carbs per serving. Makes 4 cups of soup. 
Tip: For maximum taste add ⅓ cup / 10g dried porcini mushrooms, soaked for 5 mins in hot water, washed and drained. Adds 1.6g net carbs per serve.

This post contains affiliate links. If you click on one of these links and purchase a product, I may earn a small commission, at no extra cost to you. Thank you for supporting Sugar Free Londoner.

Source link

- Advertisement -spot_img


Please enter your comment!
Please enter your name here

- Advertisement -spot_img

Latest Recipes

- Advertisement -spot_img

More Recipes Like This

- Advertisement -spot_img