This creamy keto tomato soup is a delicious, hearty replacement for store-bought tomato soup. Best of all, it contains just six net carbs per serving!
If you miss regular tomato soup on your keto diet, you've come to the right place! This delicious keto tomato soup will scratch that itch but without all the carbs.
Store-bought tomato soup is filled with sugar and cornstarch, which is not ideal on a keto diet. This low-carb tomato soup tastes much fresher and better and has no preservatives.
Another wonderful thing about this keto tomato soup is that it is very budget-friendly. You can quickly get all the ingredients from your local grocery store, and there is a good chance you already have them in your kitchen.
Ingredients Used
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Here are the simple ingredients you need for this low carb tomato soup recipe.
- Roma tomatoes: I like to use fresh tomatoes, but you can use diced tomatoes. Tomatoes are a bit acidic, but I find that sautéing them for a bit cuts down on the acidity.
- Chicken broth: This helps to enhance the flavor of the soup. If you don't have chicken stock, you can use water, but add more spices.
- Heavy whipping cream: This makes the tomato soup really creamy and adds bulk to it. You can also use unsweetened, full-fat coconut milk or coconut cream.
- Onions and garlic: To make it more flavorful.
- Spices: Smoked paprika, black pepper, cumin, cayenne pepper, and salt.
- Herbs: Herbs bring out another dimension of flavor to this keto tomato soup. You can use cilantro, fresh basil, or parsley.
- Olive oil: For sautéing. You can also use avocado oil or coconut oil.
How To Make Keto Tomato Soup
- Chop the onions and tomatoes and mince the garlic. Sauté the onions and garlic in olive oil until translucent.
- Add the chopped tomatoes, then add the spices and stir.
- Simmer on medium heat for 5 minutes. Add one cup of broth and cook for 10 minutes or till the tomatoes no longer taste sour.
- Add another cup of water and the heavy cream and mix together.
- Pour the soup into a blender and puree until smooth. Pour the soup back into a pot and adjust the seasoning if you wish. I always add salt last because broth contains some salt.
- Simmer till you reach your desired consistency.
How can I thicken keto tomato soup?
Usually, letting the homemade tomato soup simmer on the stove for a few minutes thickens it. But if you're in a hurry, you can make a slurry.
Mix half a teaspoon of arrowroot powder and a tablespoon of water in a bowl. Pour into the soup and mix together. In about a minute or so, your soup will begin to thicken.
If you need to know about the various keto and low carb thickeners out there, this article is a good place to start.
Storing and reheating
Allow the soup to reach room temperature, then store it in an airtight container in the fridge for up to 4 days. Reheat on the stove for best results.
Tips and variations
- Cayenne pepper is optional if you don't like it spicy, but it helps reduce the tomatoes' acidity.
- Another alternative to help with the acidity is to add a low-carb sweetener, such as monk fruit, stevia, or allulose.
- Use fire-roasted tomatoes for a stronger, smoky flavor.
- If you don't want to use a regular blender, you can blend your soup using an immersion blender.
- You can also coarsely blend the soup to make it chunkier if that's what you prefer.
- Add some cream cheese or a dollop of sour cream for more creaminess.
Frequently Asked Questions
Tomato soup is high in carbs because the carbs in tomatoes add up pretty quickly. One tomato contains 4.8g of carbs, and a serving of tomato soup can easily contain a few tomatoes since it thickens up when cooking.
It depends. Store-bought tomato soup can easily contain a lot of carbs which might kick you out of ketosis. The best way to enjoy tomato soup on your keto diet is to make it yourself so you can have more control over your carb intake.
No, it is not. Tomato puree is a mix of tomato paste, water, and some other ingredients and preservatives. Tomato soup has been cooked with other ingredients and usually has more flavor. It has less liquid and is a bit thicker than tomato puree.
Related Recipes
Need more low carb soups? Here are some great ideas!
- This Keto Cream of Mushroom Soup is creamy and delicious and has loads of flavor.
- If you like a bit of heat, this Spicy Cauliflower Soup will be perfect for you.
- If you need a pick-me-up, try this Keto Chicken Noodle Soup. It's absolutely divine!
- Cow Foot Soup is popular in parts of Africa and the Caribbean and is loaded with collagen, which is good for your hair and skin.
- This loaded Keto Cabbage Soup will quickly become one of your favorite soups!
📖 Recipe
Keto Tomato Soup
Equipment
Ingredients
- 3 roma tomatoes chopped
- ½ cup heavy whipping cream
- 1 cup onions chopped
- 2 cloves garlic minced
- 3 tablespoon olive oil
- ½ teaspoon cumin
- ½ teaspoon black pepper
- ½ teaspoon smoked paprika
- ¼ teaspoon cayenne pepper optional
- 1 teaspoon salt or to taste
- 1.5 cup water or broth
- cilantro or basil to garnish, optional
- arrowroot powder optional
Instructions
- Sauté onions and garlic in olive oil till translucent.1 cup onions, 2 cloves garlic, 3 tablespoon olive oil
- Add the chopped tomatoes, then add the spices and stir.½ teaspoon cumin, ½ teaspoon black pepper, ½ teaspoon smoked paprika, ¼ teaspoon cayenne pepper, 1 teaspoon salt, 3 roma tomatoes
- Simmer on medium-low heat for 5 minutes.
- Add one cup of broth and cook for 10 minutes, or till the tomatoes no longer taste sour.1.5 cup water
- Add another cup of water and heavy whipping cream, and puree in a blender, till smooth.½ cup heavy whipping cream
- Pour the soup back into a pot and adjust seasoning if you wish. Add salt if you need some.
- Let it simmer till it thickens.
- Alternatively, make a slurry using half teaspoon of arrowroot powder and a tablespoon of water. Mix together and pour into the soup.arrowroot powder
- Simmer till you reach your desired consistency.
- Garnish with cilantro or basil, and serve.cilantro
Notes
- Cayenne pepper is optional if you don't like it spicy, but it helps cut down on the acidity of the tomatoes.
- Use fire-roasted tomatoes for a stronger, smoky flavor.
- Another alternative to help with the acidity is by adding a low-carb sweetener like monk fruit sweetener, stevia, or allulose.
- If you don't want to use a regular blender, you can use an immersion blender instead to blend your soup.
- You can also coarsely blend the soup to make it chunkier if that's what you prefer.
- For more creaminess, add some cream cheese or a dollop of sour cream.
Nutrition
Tayo Oredola is the founder of Low Carb Africa, where she shares healthy, low carb dishes with global flavors. She is passionate about teaching people how to cook drool-worthy dishes while losing weight and living their best lives. Tayo’s recipes have been featured on MSN, Women’s Health, Parade, Yahoo News, Pure Wow, Essence, and other online publications.
you can use baking soda to tomatoes to make less acid
Sorry, I didn't try baking soda in the recipe.
OMG this recipe is amazing! So delicious and flavourful! I used a bunch of green onion rather than regular onion due to being low fodmap, and I added a wedge of avocado and reduced the cayenne by half. Still a bit too spicy for me. I will make it again for sure, but next time I would add a tomato, reduce or eliminate the cayenne, and double the recipe for the freezer. Thank you!
I'm glad the substitutions worked for you, Janice!
This looks easy and delicious. Will this freeze well?
Yes it does!
Thank you! I have been looking for a great recipe complete with seasonings, and the first five or so popped up with herbs de provance in it. Who does that? Nobody really like lavender in their tomato soup.
This was almost perfect, with the smoked paprika? Heaven.
I'm looking forward to more of your recipes.