This delightful summer squash soup is a perfect way to celebrate the bounty of the season. It's light, refreshing, and packed with the vibrant flavors of fresh vegetables and herbs. Whether you're looking for a quick lunch or a starter for a summer dinner, this soup is sure to impress.
While most of the ingredients for this recipe are commonly found in your pantry or local supermarket, fresh basil might be the one exception. Fresh basil adds a unique, aromatic flavor to the soup, so it's worth seeking out. If you can't find fresh basil, you can substitute it with dried basil, but use it sparingly as dried herbs are more concentrated.

Ingredients For Summer Squash Soup Recipe
Olive oil: This is used as the base for sautéing the vegetables, adding a rich flavor and healthy fats.
Onion: Chopped onion provides a sweet and savory depth to the soup.
Garlic: Minced garlic adds a pungent, aromatic flavor that complements the other ingredients.
Summer squash: The star of the dish, chopped summer squash gives the soup its fresh, seasonal taste.
Vegetable broth: This forms the liquid base of the soup, enhancing the flavors of the vegetables.
Salt: Used to season the soup and bring out the natural flavors of the ingredients.
Black pepper: Adds a touch of heat and complexity to the soup.
Fresh basil: Chopped fresh basil adds a burst of aromatic, herbaceous flavor to the finished dish.
Technique Tip for This Recipe
When sautéing the onion and garlic, make sure to cook them until they are just translucent and not browned. This will ensure that the flavors remain delicate and don't overpower the summer squash. Additionally, when pureeing the soup, blend in batches if necessary to avoid overfilling the blender, which can cause hot liquid to splatter.
Suggested Side Dishes
Alternative Ingredients
olive oil - Substitute with canola oil: Canola oil has a neutral flavor and similar cooking properties, making it a good alternative.
onion - Substitute with leek: Leeks provide a milder, slightly sweet flavor that can complement the soup well.
garlic cloves - Substitute with shallots: Shallots offer a subtle garlic-like flavor with a hint of sweetness.
summer squash - Substitute with zucchini: Zucchini has a similar texture and mild flavor, making it an excellent replacement.
vegetable broth - Substitute with chicken broth: Chicken broth can add a richer flavor, though it will no longer be vegetarian.
salt - Substitute with soy sauce: Soy sauce can add a depth of flavor and umami, though it will also add a different taste profile.
black pepper - Substitute with white pepper: White pepper provides a similar heat without altering the color of the soup.
fresh basil - Substitute with fresh parsley: Fresh parsley offers a bright, slightly peppery flavor that can enhance the soup.
Other Alternative Recipes
How to Store or Freeze Your Soup
- Allow the summer squash soup to cool completely before storing. This prevents condensation and helps maintain the soup's texture and flavor.
- Transfer the cooled soup into airtight containers. For easy portioning, consider using individual serving-sized containers.
- Label each container with the date of preparation. This helps you keep track of freshness and ensures you use the oldest batches first.
- Store the containers in the refrigerator if you plan to consume the soup within 3-4 days. This keeps the vegetable broth and fresh basil tasting their best.
- For longer storage, place the airtight containers in the freezer. The soup can be frozen for up to 3 months without losing its delightful flavor.
- When ready to enjoy, thaw the soup in the refrigerator overnight. This gradual thawing helps preserve the soup's creamy consistency.
- Reheat the soup gently on the stovetop over medium heat, stirring occasionally. Avoid boiling to maintain the delicate flavors of the summer squash and basil.
- If the soup appears too thick after reheating, add a splash of vegetable broth or water to achieve the desired consistency.
- Garnish with a sprinkle of fresh basil or a drizzle of olive oil before serving to enhance the presentation and flavor.
How to Reheat Leftovers
Gently reheat the summer squash soup on the stovetop. Pour the soup into a saucepan and warm over medium-low heat, stirring occasionally to ensure even heating. This method preserves the fresh basil flavor and maintains the soup's creamy texture.
Use a microwave for a quick reheat. Transfer a portion of the summer squash soup to a microwave-safe bowl. Cover with a microwave-safe lid or a paper towel to prevent splatters. Heat on medium power in 1-minute intervals, stirring in between, until the soup is hot throughout.
For a more controlled reheating, use a double boiler. Place the summer squash soup in a heatproof bowl and set it over a pot of simmering water. Stir occasionally until the soup is warmed through. This gentle method helps retain the soup's delicate flavors.
If you have an immersion blender, reheat the summer squash soup directly in the pot on the stovetop. As it warms, use the immersion blender to re-blend the soup, ensuring a smooth consistency and even heating.
For a slow and steady reheat, use a slow cooker. Pour the summer squash soup into the slow cooker and set it on low. Stir occasionally and let it heat for about 1-2 hours, or until it reaches the desired temperature. This method is perfect if you have time to spare and want to keep the soup warm for an extended period.
Best Tools for This Recipe
Large pot: Used to heat the olive oil and cook the ingredients together.
Wooden spoon: Ideal for stirring the ingredients as they cook.
Chef's knife: Essential for chopping the onion, garlic, and summer squash.
Cutting board: Provides a safe surface for chopping vegetables.
Measuring spoons: Used to measure the olive oil, salt, and black pepper accurately.
Measuring cups: Necessary for measuring the vegetable broth and chopped summer squash.
Blender: Used to puree the soup until it is smooth.
Ladle: Handy for serving the soup into bowls.
Soup bowls: Used to serve the finished soup.
Chopping board: Provides a surface for chopping the fresh basil.
How to Save Time on This Recipe
Prep ingredients in advance: Chop the onion, garlic, and summer squash ahead of time and store them in airtight containers.
Use a food processor: Minimize chopping time by using a food processor to quickly mince the garlic and chop the onion and squash.
Batch cooking: Double the recipe and freeze half for a quick meal later.
Immersion blender: Use an immersion blender directly in the pot to save time on transferring the soup to a blender.
Pre-measured spices: Measure out the salt and black pepper before you start cooking.

Summer Squash Soup Recipe
Ingredients
Main Ingredients
- 2 tablespoon olive oil
- 1 onion, chopped
- 2 garlic cloves, minced
- 4 cups summer squash, chopped
- 4 cups vegetable broth
- 1 teaspoon salt
- ½ teaspoon black pepper
- ¼ cup fresh basil, chopped
Instructions
- Heat olive oil in a large pot over medium heat.
- Add chopped onion and minced garlic. Sauté until translucent.
- Add chopped summer squash and cook for 5 minutes.
- Pour in vegetable broth, bring to a boil, then reduce heat and simmer for 20 minutes.
- Season with salt and black pepper.
- Use a blender to puree the soup until smooth.
- Stir in fresh basil before serving.
Nutritional Value
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