Easy Keto Vegetable Soup – Seriously Good Low Carb Soup

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This keto vegetable soup is loaded with vegetables, comforting, filling, and super easy to make. Just chop all the vegetables, simmer for a few minutes, and enjoy a big bowl of warm homemade low carb vegetable soup.

best low carb keto vegetable soup

So easy to turn vegan when you use a vegetable broth.

Ready in just a few minutes, this Low Carb Vegetable Soup it’s a great option when looking for a low calories meal or snack. It keeps me full between meals without too many calories, and nothing beats a cup of soup. 

The best part? I love to serve this hearty vegetable soup, both warm and cold. It tastes just like my grandma’s homemade vegetable soup.

Vegetable soups are high in antioxidants, vitamin A, vitamin C, fiber and low in calories.

Soups are a delicious healthy dinner choice my family loves to have every day, whether it’s cold or hot outside.

Watch the video below and start cooking this amazing keto vegetable soup.

Is Vegetable Soup Keto-Friendly?

Classic vegetables usually may contain noodles, potatoes, peas, and other high-carb ingredients. But, if you use low carb ingredients and replace noodles, potatoes with turnips, cauliflower, or radishes, a vegetable soup is perfect for enjoying on a ketogenic diet.

 keto vegetable soup low carb recipe in a black pot

What are the Best Vegetables for A Vegetable Soup

It’s easy to meal prep this vegetable soup. I buy seasonal products, chop them and store them in individual bags in the freezer, and when I’m craving a soup, I just add the veggie to a large pot. Here’s a list of my favorite vegetables for soup: 

  • cabbage
  • broccoli
  • carrots
  • cauliflower
  • celery
  • kale or spinach
  • red or yellow peppers
  • onion
  • green beans 
  • squash
  • mushrooms

Ingredients For Keto Vegetable Soup

You will be surprised when you find out that you will make an incredibly delicious low carb vegetable This keto soup recipe will impress everyone with some simple ingredients.

ingredients for keto low carb vegetable soup
  • Olive Oil -You can easily replace it with butter or avocado oil.
  • Onion & Garlic -These are two essential components that give this vegetable soup recipe a unique flavor.
  • Vegetables – I used onion, carrots, zucchini, bell pepper, celery, cauliflower florets to replace potatoes, green beans instead of peas, and canned tomatoes.
  • Low Sodium Broth: Use chicken stock, beef stock, vegetable broth for a vegan vegetable soup. For some extra health benefits, you can even replace it with Bone Broth. 
  • Seasonings: Season this soup to taste with salt, pepper, crushed red pepper flakes, Italian seasoning.

How To Make Keto Vegetable Soup

To make this delicious homemade vegetable soup, just follow a few simple steps and prepare your knife; there’s lots of chopping included. 

  1. Prepare all the vegetables by peeling and dicing them into small pieces.
  2.  Start by sauteing some onion and red peppers for a couple of minutes until the onions begin to change color and become tender.
  3. Then add the garlic and cook for about 30 seconds until fragrant.
  4. After that, you can add the rest of the vegetables, broth, and seasonings. 
  5. When the soup starts to boil, reduce to medium heat and cook for 15-20 minutes, covered, or until the vegetables are tender.
  6. Taste and adjust the seasonings if necessary.
delicious bowl of keto soup

Tip: If you’re not a fan of chunky vegetable soup, take a few cups of soup out, puree using a hand mixer, and return it to the pot.

Carbs In Vegetable Soup

Carbs in this keto soup come mostly from vegetables which also have fiber. To reduce carbs even more, you can use less onion or carrots.

This keto vegetable soup contains only 8 grams of net carbohydrates per serving. Also, all of the carbohydrates come from vegetables, which is usually a wholesome thing. In my opinion, it’s the best veggie soup recipe that you will ever try.

How To Store Low Carb Vegetable Soup?

This delicious low carb vegetable soup can be stored in the fridge for up to 4 days.

Another excellent option for storing vegetable soup is freezing. Once the soup has cooled to room temperature, transfer it to freezer containers and keep it for up to 3 months.

To thaw this low carb vegetable soup, place the bag in the fridge overnight. Use a container or a shallow bowl in case it leaks. The next day, heat up on the stove or in the microwave.

What Seasonings Are Best for Vegetable Soup?

Homemade vegetable soup is super customizable, and you can season it with any of your favorite seasonings, such as:

  • Italian herb mix
  • Basil
  • Rosemary
  • Chili flakes
  • Cumin
  • Hot sauce
  • Smoked paprika

Regarding the seasonings that I used for this Vegetable Soup, I recommended: garlic, celery, parsley, and Italian seasoning.

How to Serve Keto Vegetable Soup

If you don’t like to eat it simply as it is, here are some suggestions to make this Low Carb Vegetable Soup more enjoyable:

  • Eat it with Cornbread – this keto cornbread is fluffy, and tender, and it’s perfect for dipping into this delicious vegetable soup.
  • Something crispy and spicy like these Keto Cheese Chips also pairs great with vegetable soup on a low carb diet.
  • Seeds Crackers 


If you don’t care about carbs, feel free to use potatoes, peas, butternut squash, and corn.

On the other hand, if you are looking for a strict keto recipe, don’t add carrots and onion. If you don’t have all the vegetables on hand, it’s not a big deal as you can use any vegetables you have in your pantry. The result is still delicious. 

You can also use spinach, kale, broccoli, turnips, mushrooms, green peppers, eggplants, and pumpkin to substitute for the missing ingredients.

Make an out of this world keto vegetable soup by adding some leftover shredded chicken.

Can I Freeze Vegetable Soup?

Yes, this easy vegetable soup freezes well and reheats well. Just cool completely, then transfer to a freezer-friendly ziplock. Freeze until solid and store for up to 3 months. Make a double batch and freeze the leftovers to reheat for a quick healthy dinner.

Looking for More Keto Soup Recipes? Try these:

keto vegetable soup low carb recipe

Easy Keto Vegetable Soup – Seriously Good Low Carb Soup

5 from 4 votes

Prep time 5 minutes
Cook Time 20 minutes
Yelds 10 servings
Author Ioana Borcea from LowCarbSpark.com


This keto vegetable soup is loaded with vegetables, comforting, filling, and super easy to make. Just chop all the vegetables, simmer for a few minutes, and enjoy a big bowl of warm homemade low carb vegetable soup.
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  • 2 tbsp olive oil
  • 1 medium Onion diced
  • 1 red bell pepper diced
  • 1 medium carrot peeled and diced
  • 1 medium zucchini chopped
  • 4 cloves garlic minced
  • 2 stalks celery diced
  • 10 oz. cauliflower florets
  • 1 cup green beans fresh or frozen
  • 1 cup canned diced tomatoes
  • 8 cups low sodium broth chicken or vegetable for Vegan Soup
  • 1 tbsp Italian seasoning
  • 2 bay leaves optional
  • 3 tbsp fresh parsley chopped to garnish
  • sea salt optional, to taste
  • 1/2 tsp black pepper or more to taste
  • 1/8 tsp crushed red pepper flakes optional for heat


  • In a large pot over medium heat, add olive oil.
  • Add the onions and bell pepper. Cook for 8-10 minutes until onions are softened and translucent.
  • Add the minced garlic and cook for 30 seconds.
  • Add the cauliflower, carrots, celery, green beans, diced tomatoes.
  • Pour the broth, and add Italian seasoning and bay leaves.
  • Cover with a lid and simmer at medium-low heat for about 15-20 minutes or until the cauliflower and carrots are tender.
  • Season with salt, pepper, and red pepper flakes if desired.
  • Serve warm garnished with freshly chopped parsley.


Instant pot: To make keto vegetable soup in an Instant Pot, add all the ingredients in the instant pot (without parsley) and cook for 7 minutes. Allow the pressure to release naturally for 10 minutes, then “quick release” the remaining pressure. Taste and season to taste.
The serving size is 1 1/4 cup of soup.
Nutrition Facts
Amount per serving.
Total Carbs
Net Carbs

How do we calculate the nutrition info?

These nutrition facts listed are determined using nutrition information from the USDA Food Database. Our nutrition facts are accurate, but if you are using different products, please make your calculations. Net carb count is calculated by subtracting both fiber and sugar alcohols because they don’t raise blood sugar.

Course Soup
Cuisine American
Keyword Keto Soup, vegetable soup
Tried this recipe?Mention @LowCarbSpark or tag #LowCarbSpark!
Easy Keto Vegetable Soup - Seriously Good Low Carb Soup


The full recipe is in the recipe card below. Readers that love this aslo made these recipes:


Ioana is a food and travel lover. Her greatest passion is developing mouthwatering recipes that are comforting, easy to make, and budget friendly! She firmly believes that cooking should be fun! About me...

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Recipe Rating

One comment
  1. 5 stars
    Was looking for a quick vegetable soup for a cold winter night. This was super easy and honestly I was VERY surprised at how good it was. Very flavorful for such a quick and easy soup. I would highly recommend adding the red pepper flakes as it added just the right amount of warmth to the soup. We omitted the bell pepper due to food intolerance and just doubled up on the carrot. Hugh thumbs up!

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Hello! My name is Ioana Borcea, and I'm here to provide you with mouthwatering recipes. This blog is all about sharing my favorite tested easy to make, delicious low-carb & keto, nutrient-dense recipes.

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