Freezer Friendly/ Recipe/ Soup

Slow Cooked Tomato Soup

September 9, 2015 (Last Updated: May 29, 2019)

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Slow Cooked Tomato Soup. There are times when I need meals that I can throw together quickly.    Then there are times when I can take the time to slowly bring out the flavors of the best ingredients.   This is a soup that capitalizes on fresh, home grown tomatoes and  onions, homemade broth, and low, slow cooking.  This dish takes a bit of time, but it is totally worth it.  In the end, you can really taste the difference!

Slow Cooked Tomato SoupWhen our tomatoes start to ripen, they seem to all ripen at once and we end up with a major surplus.  This soup evolved out of trying to use up about a  gazillion pounds of  tomatoes.

Fresh garden tomatoes

Tomatoes are often very acidic.  Sugar is frequently added in order to tame the acidity.  This soup has only 1 Tablespoon of sugar.  To help further mellow the tomatoey taste, sweet onions and whole carrots are added.  You really want to add whole, organic carrots here, not those small pre-cut baby carrots.  Don’t peel the carrot.   There is so much flavor, and nutrients in the carrot skin.

The cored tomatoes, chopped onions, chopped carrots, and whole garlic are all thrown together in a large stock pot.  It’s cooked on low for about 2 hours.  The only attention you need to give it is the occasional stir. The mixture then is processed through a food mill.  This leaves you with just the beautiful sauce.  All the skin, seeds, and solids are discarded.  All the flavor is left behind!

The sauce is then returned to the stock pot for another hour of simmering!  Just add homemade chicken broth, or veggie broth, salt and pepper and sugar.  Fresh basil is added just at the end!

Three hours of slow cooking!  Pure deliciousness that just can’t be rushed!

Slow cooked tomato soup

Other Great Soup Recipes:

Creamy Tomato Soup

Creamy Chicken and Wild Rice Soup

Cheesy Broccoli Soup

Chicken Noodle Soup

Clam Chowder

Slow Cooked Tomato Soup
Prep Time
30 mins
Cook Time
3 hrs
Total Time
3 hrs 30 mins
Fresh ingredients and a long slow cooking make this soup spectacular.
Course: Soup
Servings: 6 servings
Calories: 127 kcal
Author: Kathy
  • 5 pounds fresh tomatoes
  • 4 cups chopped sweet onions
  • 2 whole large unpeeled chopped carrots
  • 2-4 cloves garlic whole
  • 5 cups chicken broth
  • 1 teaspoon salt
  • 1 teaspoon pepper
  • 1 Tablespoon sugar
  • 1 Tablespoon corn starch
  • 4-5 leaves fresh basil plus extra for garnish
  • Parmesan cheese for serving optional
  1. Wash, core, and roughly chopped tomatoes
  2. Add tomatoes, onions, carrots, and garlic into a large stock pot.
  3. Heat slowly over low heat.
  4. Stir occasionally
  5. When tomatoes have totally soften and fallen apart, approx. 2 hours, remove from heat and process through a food mill.
  6. Return sauce to pan.
  7. Add chicken broth, salt and pepper and sugar.
  8. Continue cooking for about one hour allowing soup to reduce.
  9. Mix corn starch with one tablespoon water. Add to soup. Bring back to a boil and allow to thicken just slightly.
  10. Just before serving, add basil.
  11. Garnish with additional basil and Parmesan cheese.
Recipe Notes

Soup can be cooled and frozen. Allow to thaw before reheating. Add basil after reheating.

Nutrition Facts
Slow Cooked Tomato Soup
Amount Per Serving
Calories 127 Calories from Fat 9
% Daily Value*
Fat 1g2%
Sodium 1132mg49%
Potassium 1179mg34%
Carbohydrates 27g9%
Fiber 5g21%
Sugar 17g19%
Protein 5g10%
Vitamin A 3220IU64%
Vitamin C 71mg86%
Calcium 73mg7%
Iron 1.7mg9%
* Percent Daily Values are based on a 2000 calorie diet.


Adapted from Ina Garten 

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  • Reply
    September 30, 2015 at 12:32 pm

    I love a good soup. Tomato is one of my favorites. Found you on foodgawker.

    • Reply
      September 30, 2015 at 5:08 pm

      This is an amazing soup!

  • Reply
    Anu-My Ginger Garlic Kitchen
    September 11, 2015 at 12:29 am

    This slow cooked tomato soup looks so comforting and deeeelicious, Kathy!

    • Reply
      September 11, 2015 at 5:17 am

      The perfect comfort food! Thanks!!!

  • Reply
    Manali @ CookWithManali
    September 9, 2015 at 6:13 pm

    slow cooking adds so much flavor, isn’t it? The soup looks lovely! 🙂

    • Reply
      September 11, 2015 at 5:17 am

      Slow cooking seems to just perform magic in the oven!

  • Reply
    Vanessa @ VanessaBaked
    September 9, 2015 at 5:45 am

    Your tomatoes look beautiful! That white bowl is so pretty, too! Looks great! 🙂

    • Reply
      September 9, 2015 at 6:47 pm

      Thanks, Vanessa!

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