How Can I Thicken Store Bought Tomato Soup?

Writing by Last Updated On: May 9, 2026

If you’re a fan of tomato soup, you might have noticed that store-bought varieties can be a bit thin and lack the texture you’re looking for. Luckily, there are several ways you can easily thicken store-bought tomato soup to make it heartier and more satisfying. In this article, we’ll explore some simple tips and tricks to thicken your tomato soup, from pantry staples to cooking techniques.

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Understanding Your Tomato Soup

Before you begin thickening your soup, it’s essential to understand its consistency and texture. The thickness of tomato soup can vary significantly, depending on the brand and type of soup. Some canned soups are intentionally thin and watery, while others are more substantial and hearty.

Thickening with Cornstarch

Cornstarch is a popular thickening agent used in many recipes, including soups. To thicken your tomato soup with cornstarch, you’ll need to create a slurry by mixing cornstarch and water. Once the slurry is prepared, add it to your soup and stir constantly. Simmer the soup for several minutes, and the cornstarch will thicken the soup. Be careful not to add too much cornstarch, or the soup may become too thick.

Using Flour to Thicken Tomato Soup

Flour is another common thickening agent used in soups. To thicken tomato soup with flour, start by making a roux with butter and flour. Once the roux is prepared, slowly add it to your soup, stirring continuously. Simmer the soup for several minutes to allow the flour to thicken the soup.

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Thickening with Mashed Potatoes

If you have leftover mashed potatoes, they can be a great addition to tomato soup. Simply mix the mashed potatoes into the soup and simmer for a few minutes to thicken.

Adding Cream or Milk to Tomato Soup

Adding cream or milk to tomato soup can make it creamier and thicker. Start by adding a small amount of cream or milk to your soup, then gradually add more until you reach the desired consistency.

Making a Roux

A roux is a mixture of flour and fat used to thicken sauces and soups. To make a roux, melt butter in a pan, then add flour and stir until it forms a paste. Once the roux is prepared, slowly add it to your soup, stirring continuously.

Using Bread to Thicken Tomato Soup

Bread can be used to thicken tomato soup and add a unique flavor. Simply tear the bread into small pieces and add them to the soup. Allow the bread to soak up the liquid, then blend the soup to create a smooth texture.

Adding Vegetables to Thicken Tomato Soup

Adding vegetables to your soup can make it thicker and more nutritious. Carrots, celery, and onions are great options for adding to tomato soup. Simply chop the vegetables and add them to the soup, then simmer until they are cooked through.

Simmering Tomato Soup to Thicken

Simmering tomato soup for an extended period can help it thicken. Start by bringing the soup to a simmer over medium-low heat and let it cook uncovered, stirring occasionally, until it thickens to your desired consistency.

Adding Tomato Paste to Thicken Soup

Tomato paste is a concentrated form of tomatoes that can be used to thicken tomato soup. Simply add a tablespoon or two of tomato paste to your soup and stir until it’s fully incorporated. Continue to simmer the soup for several minutes to allow the tomato paste to thicken the soup.

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Using Arrowroot Powder to Thicken Soup

Arrowroot powder is a gluten-free, natural thickener that can be used in place of cornstarch or flour. To thicken tomato soup with arrowroot powder, mix the powder with a small amount of water to create a slurry. Then, add the slurry to your soup and simmer until it thickens.

Adding Rice to Tomato Soup

Rice can be used to thicken tomato soup and add texture. Simply add cooked rice to your soup and simmer until it’s heated through. The rice will absorb the liquid and thicken the soup.

Thickening with Beans

Beans can be used to thicken tomato soup and add protein and fiber. Simply puree a can of beans and add it to your soup, then simmer until it thickens.

Thickening with Cheese

Adding cheese to tomato soup can make it creamy and thick. Simply shred your favorite cheese and add it to your soup, then simmer until it’s fully melted and incorporated.

Conclusion

Thickening store-bought tomato soup is a simple process that can be done using various techniques and ingredients. From cornstarch and flour to vegetables and cheese, there are plenty of ways to make your soup heartier and more satisfying. Experiment with different methods to find the one that works best for you.

FAQs

  1. Can I use any type of flour to thicken tomato soup? Yes, you can use all-purpose flour, whole wheat flour, or any other type of flour to thicken your soup.
  2. Can I use soy milk instead of dairy milk to thicken tomato soup? Yes, soy milk can be used to thicken tomato soup and make it creamier.
  3. Is it possible to thicken tomato soup without adding extra ingredients? Yes, you can thicken tomato soup by simmering it for an extended period to allow the liquid to evaporate and the soup to thicken.
  4. How much cornstarch should I use to thicken tomato soup? Start with a tablespoon of cornstarch mixed with a tablespoon of water, then add more as needed until you reach the desired consistency.
  5. Can I use any type of cheese to thicken tomato soup? Yes, you can use any type of cheese that melts well, such as cheddar, mozzarella, or Gouda.

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