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Cheesy Low-Carb Tomato Soup

Lauren LesterUpdated 14 November 2024★★★★★4.5 (334 ratings)

Ready in 20m
5 g net carbs
326 kcal
Serves 6

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Cheesy Low-Carb Tomato Soup (keto, primal, vegetarian)

This cheesy tomato soup is like a mashup of a grilled cheese and tomato soup, keto style! Have you ever thought about putting the cheese IN the tomato soup?

It’s an epic idea that turned out perfect! This soup is rich, creamy, cheesy, and all around great. It stores really well so it’s awesome as a meal-prep idea, especially in these cooler winter months. Bonus, that it’s ready in less than 20 minutes!

Step-by-step

Heat the oil in a large soup pot or dutch oven over medium high heat. Add the onion and garlic to the hot oil and cook until soft, about 5 minutes.
Add the crushed tomatoes, broth, and heavy cream and bring to a boil.
Add the grated cheese to the soup a little at a time until it’s fully melted into the soup. Use an immersion blender or transfer to a blender and blend until smooth.
Season with salt and pepper to taste. Serve immediately, or store refrigerated for up to 5 days.

Cheesy Low-Carb Tomato Soup

Recipe

Cheesy Low-Carb Tomato Soup

★★★★★4.5 (334 ratings)

This keto cheesy tomato soup combines the flavors of grilled cheese and tomato soup in one rich, creamy bowl! ...

Hands on: 10m
Overall: 20m
Servings: 6

5 g
Net carbs: 11.4 g
Protein: 28.2 g
Fat: 326
kcal

Ingredients makes 6 servings

3 tbsp olive oil (45 ml)
1 medium yellow onion, diced (70 g/ 2.5 oz)
2 garlic cloves, crushed
2 cans (14-oz each) crushed tomatoes (800 g/ 28 oz)
2 cups bone broth, chicken stock or vegetable stock (480 ml/ 16 fl oz)
¹/₂ cup heavy cream (120 ml/ 4 fl oz)
2 cups shredded cheddar cheese or Parmesan cheese (226 g/ 8 oz)
sea salt and pepper, to taste
Optional: fresh basil, to taste

Instructions

Heat the oil in a large soup pot or dutch oven over medium high heat. Add the onion and garlic to the hot oil and cook until soft, about 5 minutes.
Add the crushed tomatoes, broth, and heavy cream and bring to a boil.
Add the grated cheese to the soup a little at a time until it’s fully melted into the soup. Use an immersion blender or transfer to a blender and blend until smooth.
Season with salt and pepper to taste. Serve immediately, or store refrigerated for up to 5 days.

Nutrition per serving, about 1 ¼ cups/ 300 ml

Carbs 6%Protein 14%Fat 80% of calories

Net carbs: 5 g
Total carbs: 7.8 g
Fiber: 2.8 g
Sugars: 4.9 g
Protein: 11.4 g
Fat: 28.2 g
Saturated fat: 13.3 g
Calories: 326 kcal
Sodium: 578 mg · 25.1% RDA
Magnesium: 66 mg · 16.6% RDA
Potassium: 455 mg · 22.8% EMR

Nutrition by ingredient

Per about 1 1/4 cups/ 300 ml	Net carbs	Protein	Fat	kcal
Olive oil, extra virgin	0 g	0 g	6.8 g	60
Onion, brown (yellow), raw	0.7 g	0.1 g	0 g	4
Garlic, fresh	0.3 g	0.1 g	0 g	1
Tomatoes, canned (unsweetened)	2.1 g	1.1 g	0.3 g	21
Beef bone broth, beef stock	0.2 g	1.2 g	1 g	13
Cream, heavy whipping, pouring, full-fat (30-40% fat)	0.5 g	0.4 g	7.6 g	73
Cheddar cheese	1.2 g	8.6 g	12.5 g	152
Salt, sea salt	0 g	0 g	0 g	0
Pepper, black, spices	0 g	0 g	0 g	0
Total	5 g	11.4 g	28.2 g	326

Serving size about 1 1/4 cups/ 300 ml

Gluten free
Egg free
Nut free
Pork free
Avocado free
Coconut free
Fish free
Shellfish free
Beef free
Pescatarian
Vegetarian

Goes well with

Add a side and it's a complete meal.

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Comments & ratings (19)

4.5334 ratings

5 ★263
4 ★30
3 ★13
2 ★15
1 ★13

Carri22 March 2021
I have always loved Campbell's tomato Soup made with milk. I grew up on it.
I made this recipe for lunch today. Pretty good. I doubled the heavy cream; added quite a bit of salt and sweetener. It made MORE than I had thought it would, so I'm glad! My husband liked it too. I toasted some low carb bread and buttered it, dipped it into the soup as I ate. Thanks!
By the way, I tried to rate this by clicking on the stars but it just took me to the top of the page. I wanted to give it 4 stars.
1. Martina @ KetoDietAuthor3 April 2021
  Thank you so much for your feedback Carri, and thank you for reporting the issue, we will look into it!
Koniokrad19 August 2020
Tomato soup is my favorite. I always add a lot of pepper to it, I like very intense flavor. Your recipe is very good, today it made me delicious for dinner. Thanks for that, he adds to the favorites.
Diane★★★★★21 November 2019
I made this soup today. It was very easy to make and had a great flavour.
Thank you!
1. Martina @ KetoDietAuthor26 November 2019
  Thank you Diane!
Barbara Douglas18 November 2019
This is a favorite with my hubby! Last time I made it I added a bit of fresh grated ginger and the basil.
1. Martina @ KetoDietAuthor26 November 2019
  Thank you Barbara, I wouldn't have thought of ginger, will have to try!
Deb14 May 2019
Would I be able to use fresh tomatoes instead of tinned?
1. Martina @ KetoDietAuthor20 June 2019
  You can use fresh tomatoes but I personally prefer tinned because they are peeled. Sometimes the skin doesn't all get blended. Or you can use fresh tomatoes and peel the skin off. I do that by placing whole uncut tomatoes in a sauce pan and pouring boiling water over them. Then I let them soften for 30-60 seconds, drain them and then they peel easily 😊
  1. Carri22 March 2021
    30 to 60 minutes is way too long a method!! Maybe you meant seconds and NOT MINUTES? I boil a pot of water. Add the whole tomatoes. Count for 30 SECONDS and immediately spoon them out into a bowl. Run cold water over them and they will begin to shed their skin. as you rub your hands over them. Core and use.
    1. Martina @ KetoDietAuthor3 April 2021
      You are right! Thank you so much, this was a bad typo in the comment above.
Krissie20 April 2019
My family absolutely loved this. It is so flavorful. And really easy to make. Perfect for a busy weekday dinner. The next day we added broccoli to the leftovers. Delicious!
1. Martina @ KetoDietAuthor20 June 2019
  Thank you Krissie!
Sarah3 March 2019
Can I freeze this reciepe?
1. Martina @ KetoDietAuthor4 March 2019
  Yes, you can freeze this soup for up to about 3 months.
Beth23 February 2019
Lauren - I have a question about the crushed tomatoes - is it 2 cans for a total of 28 ounces or 2 cans that total 28 ounces? Thank you. Beth
1. Martina @ KetoDietAuthor23 February 2019
  Hi Beth, it's 28 oz (800 g) total, ie 2 regular 14-oz cans or 1 large 28-oz can. I hope this helps!
  1. Anne19 October 2021
    Maybe you should rewrite that. I also had to reread it, and my conclusion was that it was 2 X 28oz cans.
    1. Martina @ KetoDietAuthor20 October 2021
      I will add (14-oz) after "cans" for clarity. General rule: I follow the standard format in all recipes (weights in parentheses at the end are always per total amounts). If the weight was listed per can, it would have to be right after the number 2.