Easy Three-Ingredient Tomato Soup

My favorite tomato soup recipe! You wouldn’t think that three ingredients — butter, onion, and tomato — can come together to make such a velvety and delicious tomato soup, but let me tell you. They can. Jump to the Tomato Soup Recipe or watch our quick recipe video showing how to make it.

Watch Us Make the Recipe

How To Make The Easiest Tomato Soup From Scratch

This simple homemade tomato soup is quick, easy, and insanely delicious.

The soup is inspired by one of the most famous recipes out there — Marcella Hazan’s Tomato Sauce. Butter, tomatoes, and onion are simmered until slightly thickened. Out comes the onion and the sauce is ready to be spooned over pasta.

It’s genius and absolutely delicious. We use the same three ingredients in this tomato soup, but add a little water and blend everything together just before serving.

Easy Three-Ingredient Tomato Soup Recipe

Making The Soup

Here’s how to the best (and easiest) tomato soup:

Combine butter, onion, and tomatoes. Grab a Dutch oven or pot, place it over medium heat and melt the butter. Add half an onion that’s been cut into large wedges and a large can of tomatoes.

Add water or broth and simmer. Bring everything to a low simmer, add some salt and leave it alone for about 40 minutes. See how creamy it gets? That’s thanks to the butter.

Blend. I find an immersion blender is useful, but a blender works, too. Adjust the soup for seasoning then grab a bowl…and maybe a grilled cheese sandwich? This soup is also amazing topped with homemade croutons or served next to this easy buttery garlic bread.

Tomato Soup Ingredients
Tomatoes (canned or fresh), onion, and butter.
Cooking tomato soup
What the tomato soup looks like after adding water (or broth) and simmering.

What Tomatoes Should I Use

This tomato soup is excellent with canned tomatoes. I love using whole peeled tomatoes or crushed tomatoes. By the way, we love San Marzano Tomatoes and are always pleased with tomatoes from Muir Glen. Neither are watery and both taste great.

You can also use fresh tomatoes. You will need 10 to 12 whole tomatoes (or about 2 pounds). It’s best to peel them, but we have made the soup with unpeeled tomatoes.

A Quick Recap

This is your new favorite weeknight meal. Promise.

  • This tomato soup has three ingredients (plus water and salt).
  • Everything is tossed into a pan — no browning, no hovering over a stove.
  • You can use canned tomatoes — and should.
  • Did I mention there are only three ingredients?

What Our Readers Are Saying

If you don’t believe that our recipe helps you achieve perfect tomato soup at home, take a look at what our readers are saying about the recipe! More reviews are in the comments section below.

“WOW!! What a delicious and easy tomato soup, my three and one-year old were as thrilled as my husband and I were.” – Ashley

“This is the best tomato soup, hands down!! Cannot say that emphatically enough. Did not change a thing from the recipe and it was perfect. Couldn’t be easier to make.” – John

“Made this exactly as written. Oh my gosh, this was amazing!!!” – Dayna

Easy Three-Ingredient Tomato Soup Recipe

More Easy Soup Recipes

Recipe updated, originally posted October 2015. Since posting this in 2015, we have tweaked the recipe to be more clear and added a quick recipe video. – Adam and Joanne

Easy Three-Ingredient Tomato Soup

  • PREP
  • COOK

You only need three main ingredients to make this velvety, rich tomato soup recipe. This, friends is your new favorite weeknight meal.

Makes 2 generous servings

You Will Need

4 tablespoons unsalted butter

1/2 large onion, cut into large wedges

1 (28-ounce) can tomatoes, we prefer to use whole peeled or crushed, see notes for fresh tomatoes

1 1/2 cups water, low sodium vegetable stock, or chicken stock

1/2 teaspoon fine sea salt, or more to taste


    Melt butter over medium heat in a Dutch oven or large saucepan.

    Add onion wedges, water, can of tomatoes with their juices, and 1/2 teaspoon of salt. Bring to a simmer. Cook, uncovered, for about 40 minutes. Stir occasionally and add additional salt as needed.

    Blend the soup, and then season to taste. The soup doesn’t need to be ultra-smooth, some texture is a nice touch. An immersion blender does make quick work of this, or you can use a blender. If you use a regular blender, it is best to blend in batches and not fill the blender as much as you usually would since the soup is so hot. We like to remove the center insert of the lid and cover it with a kitchen towel while blending — this helps to release some of the steam and prevents the blender lid from popping off (which can be a big, hot mess).

Adam and Joanne's Tips

  • Can I use fresh tomatoes? Yes. If you want to use fresh tomatoes, you will need 10 to 12 medium tomatoes (or about 2 pounds). You can peel them, but we skip this step since we will be blending the soup in the end anyway.
  • Can I make this vegan? Yes, olive oil is an option or coconut oil instead of butter. Coconut oil might sound odd but the light coconut flavor with onion/tomatoes is pretty delicious.
  • Can I add basil? This soup is delicious with and without basil. Adding a handful of fresh basil at the end before blending the soup is a fantastic idea.
  • Nutrition facts: The nutrition facts provided below are estimates. We have used the USDA Supertracker recipe calculator to calculate approximate values. We have omitted salt since you will need to add to your tastes.

If you make this recipe, snap a photo and hashtag it #inspiredtaste — We love to see your creations on Instagram and Facebook! Find us: @inspiredtaste

Nutrition Per Serving: Serving Size Half of the recipe / Calories 348 / Total Fat 24.9g / Saturated Fat 14.8g / Cholesterol 61mg / Sodium 1485.4mg / Carbohydrate 29.6g / Dietary Fiber 4.5g / Total Sugars 15.4g / Protein 7.8g
AUTHOR: Adam and Joanne Gallagher

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508 comments… Leave a Comment
  • Patricia A. Hall-Whigham October 20, 2020, 12:47 pm

    I’m making this tonight for supper! This sounds simply deliish. I love that I can control the amount of sodium AND there’s no MSG (like there is in some commercially canned soups!).

  • Deborah Lovel Bryner October 19, 2020, 8:17 pm

    I made this soup today – it was incredible! I added some crushed basil and a couple dashes of Cholula hot sauce, and instead of water, I used whole milk. Delicious!!!!

  • Denise October 17, 2020, 1:59 pm

    I used salted butter is it ok

  • Mar Swift October 13, 2020, 11:05 am

    Anyone let soup cool before blending? Then reheat?

  • Allie October 5, 2020, 2:38 pm

    I’ve used this recipe many times over the last two years now. Sometimes I make it as is and sometimes I add basil, or a bay leaf, or even brown garlic in the butter before adding everything else. This recipe is so versatile and delicious. It will be my go to for years.

  • Valerie A Kennelley October 1, 2020, 8:32 pm

    Made it for the 1st time, my 74 year old mother said she liked it better than Campbell’s. Getting a compliment like that from my mother is like getting snow in southern Florida. Thank you recipe “gods”.

  • Brooke Wilder September 27, 2020, 4:24 pm

    This was SO EASY and so delicious, my 10 year old couldn’t get enough!

  • Valarie M Thayer September 22, 2020, 11:57 am

    I have made this soup several times. My 14 yr old daughter likes this soup way better than the store bought, she prefers this over all other soups. My hubby also loves this soup, as do I. Super easy to make and oh sooooo delicious, yum.

  • Nichole September 16, 2020, 1:45 pm

    This may seem like a silly question but I am using a can of crushed tomatoes. Do I still need to blend after cooking?

    • Adam February 8, 2021, 5:16 pm

      Hi Nichole, we still recommend blending so that the onions are blended with tomatoes.

  • Anne September 15, 2020, 4:34 pm

    Crushed the tomatoes and onions and 1 clove of garlic in my ninja blender before cooking that way I wouldn’t have to wait for it to cool down after.

  • Tonya Street September 15, 2020, 2:53 am

    I just made your Easy Three-Ingredient Tomato Soup. It was easy and delicious. I am a school bus driver, so like make ahead dishes I can easily reheat when I get home. I doubled the recipe so I had 6 servings. I also added a bit of basil and garlic. I will never buy canned soup again!

  • Peggy Phillips September 13, 2020, 5:32 pm

    Brilliant, so easy to make, so delicious to eat. Will be making this time and time again.

  • Peggy Phillips September 13, 2020, 12:20 pm

    I made the three ingredient tomato soup with a glut of fresh tomatoes yesterday. It is so delicious and easy that I am making more today. I just put everything in a large pot together, did not bother to melt the butter first. It turned out so good that it will be my go to recipe for any future entertaining. Will be freezing some to see if the flavour is just as good when thawed. I would definitely give it 5 stars.

  • Colleen September 10, 2020, 6:26 pm

    This has become my go to Tomato Soup recipe.. I have used fresh tomatoes and I have used canned tomatoes and I have used a combination of fresh and canned tomatoes…. They ALL came out tasting amazing! My immersion blender broke..so I cooked it all up…let it cool a bit and threw it into the blender… Still Delish!! From my grandchildren to my grown children..They ALL agree that this has become a family favorite! With grilled Cheese sandwiches on the side! Thank you!

  • Kim September 9, 2020, 4:52 pm

    We have so many tomatoes from our garden and I was looking for a way to use them up. This seemed too easy so I thought it was too good to be true. But it is amazing! I followed the recipe exactly (with fresh not canned tomatoes). I added nothing else. Perfect! No more canned tomato soup for me.

    • Megan Taylor November 3, 2020, 4:22 pm

      I love this recipe! Added in half a pkg of real bacon crumbles/pieces and it gave it this great smoky flavor. It’s great without the bacon but my husband doesn’t eat soup, well unless you add bacon 😉. He loved it, he actually requests it quite often. And don’t forget some grilled ham and cheese sourdough sandwiches sliced for dunking.


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