Classic Cold Zucchini Soup

Bowl of zucchini soup
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  • Total: 25 mins
  • Prep: 10 mins
  • Cook: 15 mins
  • Chilling Time: 60 mins
  • Yield: 4 to 6 servings
Nutritional Guidelines (per serving)
45 Calories
1g Fat
5g Carbs
4g Protein
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Nutrition Facts
Servings: 4 to 6 servings
Amount per serving
Calories 45
% Daily Value*
Total Fat 1g 2%
Saturated Fat 1g 3%
Cholesterol 12mg 4%
Sodium 629mg 27%
Total Carbohydrate 5g 2%
Dietary Fiber 1g 3%
Protein 4g
Calcium 47mg 4%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

Cold zucchini soup has a wonderfully smooth, thick texture simply from the amount of zucchini, as there are no starchy thickeners in sight. Make it creamier with the addition of cream or yogurt, if you like. It's perfect for using up prolific zucchini, and makes a delightfully cooling meal to boot! This is a great chilled summer soup for hot nights.


  • 1 medium onion (chopped)
  • 1 tbsp. oil (or butter)
  • 1/2 tsp. salt (plus more to taste)
  • 4 medium zucchini
  • 3 to 4 cups of vegetable (or chicken broth)
  • Optional: 1/4 to 1/2 cup heavy cream, sour cream, or whole milk yogurt
  • Optional: freshly ground black pepper

Steps to Make It

  1. Heat a medium pot over medium-high heat and add oil or butter. When the oil is hot, add the onion and salt. Cook, stirring occasionally, until onion is translucent and tender, about 5 minutes.

  2. Meanwhile, trim and chop the zucchini. Add zucchini and broth to the onion. Raise heat to bring to a boil then reduce heat to maintain a steady simmer and cook, stirring occasionally, until zucchini is very tender, about 15 minutes.

  3. Working in batches if necessary, whirl soup in a blender or food processor until very smooth (at least 1 minute per batch).

  4. Put pureed soup in a large bowl or sealable container. Cover and chill until cold.

  5. When ready to serve, stir in cream or yogurt, if using, and add salt and pepper to taste.