Instant Pot Leek & Cauliflower Low Carb Soup Recipe (2024)

Last updated on May 4, 2019

by Karami Urbanoski

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Instant Pot Leek & Cauliflower Low Carb Soup Recipe (2)

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If you are looking for a great low carb soup recipe, look no further. My newInstant Pot Leek & Cauliflower Low Carb Soup was demolished by all four members of our family, a relative miracle when you have a picky eater in the family! This is creamy, rich and chock full of vegetable goodness.

Instant Pot Leek & Cauliflower Low Carb Soup Recipe (3)

Instant Pot Low Carb Soup

‘Tis the season to bring out the Instant Pot and leave it on the counter…..until spring. Karlynn and I use it almost daily to make soups once the cold weather hits, the kids love to have a bowl before swim team to fuel up ( and swim team this year is 5 days a week, Lord help us) and we usually have a bowl of soup for a quick lunch during the week.

We find that using the Instant Pot for soup speeds up the process a lot – and even times when it doesn't, there is something to be said for putting a lid on it and LEAVING. When you have something simmering on the stove top you are always watching it, walking over to stir it and babying it a bit. Not the pressure cooker. Start it, leave and come back when it beeps. It's not going to spill over onto your stove and make a mess, you don't have to stir it and it keeps food hot perfectly. We will make a soup for lunch, put the lid back on and leave it in the Instant Pot on the “keep warm” setting until the kids get home at 3. It's still piping hot and ready for them to eat when they get home.

Instant Pot Leek & Cauliflower Low Carb Soup Recipe (4)

Cauliflower Soup For the Low Carb Win

It's already commonly known that cauliflower is a go-to for EVERYTHING low carb – mashed cauliflower, cauliflower rice and yes, soups galore. I love leeks, so a leek and cauliflower soup sounded like a combination of my two favourite soups together. I didn't put any cheese in this, but I can see that perhaps a Swiss Cheese might be nice and sharp in this rich soup, but I wouldn't put it past a cheddar cheese to be excellent in this as well.

The real trick to keeping it low carb is to NOT use milk ( which has a lot of carbs in it) but to use heavy whipping cream instead. It's richer and has fewer carbs. This soup doesn't need thickening with anything at the end either.

Instant Pot Leek & Cauliflower Low Carb Soup Recipe (5)

Using Leeks in Soup

There are a few tips and tricks to using leeks in your cooking:

  1. You don't use the woody green stalks of leeks, just the pale white/pale green parts. You can see in the photo above how and where you are suppose to chop them. You DO want to use as much as possible, so a little bit of light green colour is fine.
  2. Leeks have hidden dirt between the layers usually. You are going to have to chop off the aforementioned green parts and then make sure to rinse the paler parts well!
  3. Leeks are like onions, you have to make sure they are cooked fairly well before you add them to a soup or dish. With the Instant Pot cooking however this isn't as big of a deal.

Instant Pot Leek & Cauliflower Low Carb Soup Recipe (6)

And there you have it! A great low carb soup recipe for you to try. My favorite part is that I still have two leeks left out of my bunch, oh darn, looks like there is more leek soup to be made this week.

Happy low carbing,

Mike

Instant Pot Leek & Cauliflower Low Carb Soup Recipe (7)

Instant Pot Leek & Cauliflower Low Carb Soup Recipe (8)

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Instant Pot Leek & Cauliflower Low Carb Soup Recipe

You will NOT believe your tastebuds with this Instant Pot cauliflower leek low carb soup! How can something low carb taste this darn good?

5 from 1 vote

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Course
Soup
Cuisine
American
Servings
8
Calories
201
Author
Karami Urbanoski

Ingredients

  • 2 tablespoons olive oil
  • 3 tablespoons butter
  • 2 leeks white/pale green part only, cut into 1/2 inch pieces
  • 1 large head cauliflower chopped
  • 1 tbsp minced garlic
  • 8 cups chicken broth
  • 1 cup heavy cream
  • salt and freshly ground black pepper to taste
  • Diced green onion and bacon to top is desired

Instructions

  • Heat the olive oil and butter in the bottom of your Instant Pot using the "sautee" feature, and Saute the leeks, cauliflower, and garlic for about 10 minutes.

  • Add in the chicken brother and stir.

  • Place the lid of the Instant Pot on and seal.

  • Press the "soup" button and choose 30 minutes.

  • Once the Instant Pot is done, you can either use a manual release ( place a tea towel over the steam spout and turn to release, making sure not to burn yourself) or let it release naturally according to the owners manual.

  • You will NOT overcook this as you want everything soft anyways,

  • Carefully remove the lid of the Instant Pot according to the owners manual.

  • Blend the soup with an immersion blender or hand mixer.

  • Season with salt and pepper.

  • Mix in the heavy cream and continue blending until the soup is very smooth.

  • Garnish with green onions and/or cooked bacon.

Recipe Notes

Make sure to wash your leeks well so that there is no grit in your soup!

Nutrition Information

Calories: 201kcal, Carbohydrates: 5g, Protein: 2g, Fat: 19g, Saturated Fat: 10g, Cholesterol: 52mg, Sodium: 917mg, Potassium: 290mg, Sugar: 1g, Vitamin A: 940IU, Vitamin C: 26.1mg, Calcium: 53mg, Iron: 1mg

All calories and info are based on a third party calculator and are only an estimate. Actual nutritional info will vary with brands used, your measuring methods, portion sizes and more.

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  1. Anna says

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    This turned out super yummy! Loved the simplicity with amazing taste.Instant Pot Leek & Cauliflower Low Carb Soup Recipe (10)

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Instant Pot Leek & Cauliflower Low Carb Soup Recipe (2024)

FAQs

How many carbs does cauliflower soup have? ›

Cream of cauliflower soup (1 cup) contains 20.2g total carbs, 16.8g net carbs, 3.6g fat, 4.1g protein, and 124 calories.

Why is my cauliflower soup tasteless? ›

Bland cauliflower soup is a result of a lack of seasoning. Here's how to ensure every bowl is packed with flavor. Season twice with salt and pepper: You'll start by seasoning the cauliflower florets with salt and pepper before roasting.

Should leeks be sauteed before adding to soup? ›

Sautéing leeks before adding them to the soup can enhance their flavor and bring out their sweetness. Heat some oil or butter in a pan, then add the sliced leeks. Cook them over medium heat until they become soft and slightly caramelized. This step adds depth of flavor to your soup.

Do leeks have lectins? ›

Lectin and alliinase are the predominant proteins in nectar from leek (Allium porrum L.)

Can I eat unlimited cauliflower on keto? ›

You do not have to limit vegetables if you are on the keto diet or are considering it. Plenty of low-carb vegetable options include arugula, asparagus, bell peppers, broccoli, Brussels sprouts, cauliflower, kale, mushrooms, spinach, and tomatoes.

Can you eat cauliflower on a low-carb diet? ›

Cauliflower is another vegetable that's low in carbs, but also very high in vitamins and phytochemicals,” Fear says. Add chopped cauliflower to your salads, or top with paprika and garlic powder and roast in the oven. Riced cauliflower also makes a great low-carb replacement for traditional rice.

How do you add depth of Flavour to soup? ›

"If your broth is lacking in savory richness, try adding roasted onion, tomato paste, mushrooms, seaweed, soy sauce, or miso. These ingredients add umami flavor and depth to broth," she says. The choice of ingredient depends on the recipe, though.

How do you thicken cauliflower soup? ›

Add flour or cornflour

Put a tablespoon of either into a small bowl and stir in 2-3 tbsp of the soup until you have a smooth mixture. Stir this back into the soup and bring it to a simmer. Cook for a few minutes to allow the starch granules to burst to thicken, and to cook out any flour flavour.

What brings out the Flavour of cauliflower? ›

This is true of any vegetable — boiling it will give you a flavor closer to the raw flavor, which means more bitterness and more astringency. Caramelizing it will bring out its hidden sweetness. This light, vibrant roasted cauliflower salad is a recipe I developed for the fall menu at Duo.

Should onions be cooked before adding to soup? ›

You should. Traditionally, a mirepoix is made: diced onion, carrot, celery. Cooked SLOWLY in a sauce pan until the start to sweat, over medium-low heat for 10 minutes or so, stirring often — then added to the soup. This brings out the full flavor and makes the soup taste better.

Why is my leek soup bitter? ›

Leeks, like onions, can become bitter if they're cooked for too long or at too high a heat. Make sure to sauté leeks over medium heat until they are soft and translucent, not browned. Another reason could be using the green parts of the leek, which are more fibrous and have a stronger flavor.

How does Gordon Ramsay cook leeks? ›

Season leeks with soy, maple, sesame oil, and mirin. Top with sliced garlic and a few knobs of butter around the outside of the pan. Add just enough stock to cover leeks halfway, bring to a boil and pop into over to roast until caramelized and tender when pierced with a knife.

Can leeks raise blood pressure? ›

Leeks contain iron for maintaining red blood cells that carry oxygen to tissues, and manganese, important for regulating nerve function. Leeks also contain potassium while also being low in sodium, which helps to lower blood pressure.

Are leeks a laxative? ›

Given its fibre content, the leek has laxative properties and is a real ally for the bowels. Leeks have diuretic properties and they are recommended in diets for urinary tract problems, constipation, obesity, haemorrhoids, rheumatism, and arthritis.

Is cooked cauliflower high in carbs? ›

Cauliflower is fat-free and cholesterol-free. And it's low in sodium. A one-cup serving contains only 25 calories, 5 grams of carbohydrates and 2 grams of dietary fiber.

How many net carbs are in 2 cups of cauliflower? ›

Cauliflower, raw (1 cup) contains 5.3g total carbs, 3.1g net carbs, 0.3g fat, 2.1g protein, and 27 calories.

How many net carbs in 1 cup of cooked cauliflower? ›

Cauliflower, cooked, boiled, drained, without salt, 1 cup (1" pieces)
Protein (g)1.14
Carbohydrate, by difference (g)2.55
Energy (kcal)14.26
Sugars, total (g)0.87
Fiber, total dietary (g)1.67
34 more rows

Does boiled cauliflower have carbs? ›

Cauliflower, cooked from fresh (0.5 cup) contains 2.5g total carbs, 1.1g net carbs, 0.3g fat, 1.1g protein, and 14 calories.

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