Low Carb Low-Calorie Homemade Tomato Soup

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You won’t miss the carbs, calories, or cream in this Low Carb Low-Calorie Homemade Tomato Soup. It’s creamy and full of fresh tomatoes and herbs.

Ladies hand with a spoon of tomato soup next to another bowl of soup and a blue and white cloth

Why We Love this Soup

This soup is not only good but it’s good for you – low in calories and carbohydrates.
You won’t believe how fresh the soup tastes. It’s like fresh tomatoes right off the vine.
Soup is the perfect meal for lunch or dinner. It’s comfort food in a bowl. I like to call this soup a “hug in a mug”.

Ingredients

tray with the ingredient to make tomato soup

Canned Peeled Tomatoes – I use a 14.5-ounce can of San Marzano brand tomatoes. If you cannot find the smaller sized can, buy the large one, use half and freeze the other half in a zip-top bag.
Roma Tomatoes – I recommend using Roma tomatoes which are also called plum tomatoes. They are especially sweet and have a rich flavor because they are grown in volcanic soil.

Let’s Make Low Carb Low-Calorie Homemade Tomato Soup

Slice the tomatoes into quarters.
Toss the tomatoes with olive oil and salt and pepper.
Place them on a cookie sheet and roast them for 15 minutes at 375°.
When the tomatoes are finished roasting, pour the entire pan of roasted tomatoes, with juices, into a blender.
Add the can of peeled tomatoes including the juice.

Blend until smooth.
Pour the tomato soup, from the blender, into a stove-top pot.
Add the chicken broth and thyme.
Bring it to a boil, reduce to a simmer and simmer for 10-15 minutes.
Garnish with fresh thyme.
Taste and add additional salt and pepper if needed.

Frequently Asked Questions

I’m a vegetarian, can I use vegetable broth instead of chicken broth?

Yes, you can absolutely substitute vegetable broth.

How many calories are in 1 serving of this soup?

There are approximately 54 calories and 10.5 grams of carbs in one 6-ounce serving of this soup.

What’s so special about San Marzano tomatoes?

San Marzano tomatoes are an Italian product, but you can buy them in most grocery stores. They are a type of plum tomato, like a Roma tomato, but they are longer and thinner than Roma tomatoes. They also have a strong tomato flavor and have a thicker skin. They are perfect for making soups, sauces and stews.

Krazy Kitchen Mom Tips

Make sure you buy and use the peeled whole canned tomatoes for this recipe. And of course, I recommend using San Marzano brand canned tomatoes.
When making any recipe using canned or fresh tomatoes, you can add a teaspoon of sugar to cut down on the acidity if you find that the acid taste is too strong.
We like this soup just a much the second day as the first. It can be stored in an airtight container in the refrigerator for 3-4 days.
This soup also freezes well. Make sure it’s room temperature and freeze it in an airtight container for 3 months. Thaw in the refrigerator for 24 hours prior to reheating.

two bowls of tomato soup with a blue and white cloth around them, two spoons and some thyme and sliced tomatoes

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