Instant Pot Cauliflower Soup

Instant Pot Cauliflower Soup
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Creamy Cauliflower Soup with Bacon and Mushrooms

Instant pot cauliflower soup is loaded with bacon and mushrooms for a seriously delicious (but easy-to-make) low carb soup. It is the kind of soup you can make for a party, for meal prep, or just for a quick weeknight meal.

The recipe card at the bottom of the post has the full list of ingredients and instructions for your convenience. Before you scroll there, there is important information in the post!

Let’s face it, there are people who like soup a little and there are people who enjoy soup all year long. Regardless of what camp you’re in, you’ll enjoy this cauliflower soup.

If I could describe it, it would be a seafood-free low carb chowder. The mushrooms and bacon and cream mixed with the cauliflower make it a creamy chowdery kinda soup.

Is this Cauliflower soup Low carb?

Bacon, mushroom, and cauliflower soup recipe

Yes! This cauliflower soup is made with exclusively low carb ingredients! One serving of this soup is 5g net carbs.

Ingredients for this Instant Pot Cauliflower Soup

The ingredients for this low carb cauliflower chowder-style soup are easy to find.

Ingredients for Instant Pot Cauliflower soup
  • Bacon
  • Cauliflower
  • Water (or chicken stock for more flavor)
  • Mushrooms
  • Onions
  • Garlic cloves
  • Heavy cream
  • Crushed red pepper
  • Salt

Tips for making this Low Carb Cauliflower and Mushroom Soup

Making this creamy cauliflower, bacon, mushroom soup requires only a few steps. Instructions for making this soup on the stove are found in a lower section of this post.

The first thing you’ll do is saute the bacon on the saute mode.

Brown the bacon in the Instant Pot

Cook it until it is crispy then spoon it out and set it aside while everything else cooks.

Bacon crumbles to top the soup with

Saute the onions in the leftover bacon fat for several minutes then add the mushrooms and saute them for another minute or two. Add in the garlic, salt, and red pepper and heat that for 30 seconds.

Pressure cooker cauliflower soup with mushrooms, garlic, and spices

Add the cauliflower and water (or stock) and close the Instant Pot lid and make sure the sealing valve is closed.

Cauliflower, bacon, and mushroom low carb soup recipe

Set the Instant Pot to soup mode for 6 minutes. The total time to reach pressure and quick-release pressure is about 15 minutes in an 8qt Instant Pot.

Finish making the soup with heavy cream

The final steps include stirring in the heavy cream and serving the soup then topping each portion with some of the bacon that was cooked at the beginning.

Creamy cauliflower and mushroom soup
Spoon of bacon cauliflower mushroom soup cooked in a pressure cooker

Optional: Add in some cheese or sour cream if you want the soup to be even creamier. If you want the soup to be thickened, you could whisk in 1/4 tsp xanthan gum.

Optional: add cheese to the bacon cauliflower soup

Tools for making this Cauliflower soup recipe

The main tool you’ll need for making this cauliflower soup recipe is an Instant Pot!

Since you can saute the bacon and vegetables on saute mode, all you need is the Instant Pot!

Foods that would go well with this Cauliflower and Bacon Soup

When thinking about what would pair nicely with this soup, think about a Soup, salad, breadstick sort of meal.

These Jalapeno popper muffins would be a perfect keto-friendly bread! You could also enjoy this soup with our Farmers Market Salad.

Keto Cauliflower soup topped with bacon

How to make this Cauliflower soup without an Instant Pot

To make this cauliflower soup without the Instant Pot, you can use a 5qt (or larger) soup pot.

  1. Cook the bacon, until crispy then remove it.
  2. Add the onions and allow them to cook in the bacon drippings.
  3. Add the mushrooms and allow them to cook.
  4. Add the cauliflower, spices, and liquid.
  5. Cover and bring to a boil then reduce to medium-low for 15 minutes.
  6. Add the cream and serve. Top with the crispy bacon.

More Low Carb Instant Pot Soup recipes

Okra Soup with Ham

Keto Cheeseburger Soup

Cabbage and Sausage Stew

Healthy Instant Pot Chili (with a no-bean low carb option)

Keto Broccoli Cheese Soup

Connect with Yellow Glass Dish!

Did you make this recipe? Make sure to join the @yellowglassdish community on instagram and tag me in your cooking pictures! Don’t miss out on tips, updates, and free kitchen printables! Join our Email List right here!
You can also join the YGD Facebook community! Also, get awesome low carb recipe inspiration on Pinterest.

For THM friends, this is an (S)

Instant Pot Cauliflower Soup with Bacon and Mushrooms

This Instant Pot cauliflower soup is an easy keto-friendly soup to make with bacon and mushrooms. Enjoy this low carb and gluten-free soup on a chilly day, meal prep with it, or serve it at a gathering.
Prep Time5 mins
Cook Time25 mins
Total Time30 mins
Instant Pot, Keto Lunch, Soup, Supper
Cuisine: American
Cauliflower, chowder, Gluten-free, Instant Pot, Keto, Keto Soup, Low Carb, Mushrooms, THM-S
Servings: 6
Calories: 185kcal


  • 6 slices Bacon diced
  • 4 cups Cauliflower florets
  • 4 cups Water or chicken stock for more flavor
  • 8 oz Mushrooms quartered
  • ½ cup Onion Thinly sliced
  • 3 cloves Garlic minced
  • ½ cup Heavy Cream
  • ¼ tsp Crushed red pepper
  • 1 tsp Salt


  • Saute bacon and cook until crispy*(this takes about 5 minutes). Scoop out the bacon and leave the fat in the Instant Pot.
  • Saute the onions for 2-3 minutes then add the mushrooms and cook for 2-3 more minutes and add the garlic, salt, and red pepper and stir for another 30 seconds.
  • Add the water and cauliflower and close the lid and make sure the sealing valve is closed.
  • Cook on soup mode for 6 minutes (15 minutes to reach pressure and release pressure).
  • Once the cooking cycle has finished, do a quick pressure release. Stir in the heavy cream.
  • Serve the soup and top it with the crispy bacon.


Note: Nutrition facts reflect using water as the liquid. If you use chicken or vegetable stock, the nutrition values will change.
If you add stock instead of water, only add 1/2 tsp salt and then add more at the end if you think it needs more. 

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This healthy Instant Pot Cauliflower soup recipe is keto and low carb friendly and loaded with flavor.

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