
When summer hits and your garden is overflowing with zucchini, this silky smooth soup becomes your secret weapon for turning those endless green squash into something absolutely gorgeous and delicious. There's something so satisfying about transforming humble zucchini into a velvety, restaurant-quality soup that tastes like pure summer sunshine. The addition of cashews creates this incredible creaminess without any dairy, while fresh herbs and a squeeze of lemon make every spoonful bright and refreshing.
I discovered this soup during a particularly prolific zucchini season when I was getting desperate for new ways to use up the mountains of squash from our garden. The first time I made it, I was amazed at how something so simple could taste so elegant and refined. Now it's become my go-to recipe whenever I need something light yet satisfying, and guests always ask for the recipe.
Essential Ingredients for Bright Summer Flavor
- Fresh zucchini (about 2 pounds): Choose medium-sized ones that aren't too large and seedy for the best flavor and texture
- Raw cashews: The secret to that incredible creamy texture without any dairy products
- Sweet onion and fresh garlic: Create the aromatic base that makes this soup so flavorful
- Quality vegetable or chicken broth: Provides the liquid base and adds depth of flavor
- Fresh lemon juice: Brightens everything and adds that essential zing that makes the soup sing
- Fresh herbs like parsley and dill: Bring that garden-fresh taste that screams summer
Step-by-Step Cooking Process
- Create your aromatic foundation:
- Heat 2 tablespoons olive oil in a large soup pot over medium heat. Add 1 diced sweet onion and cook for 5-6 minutes until softened and translucent. Add 3 minced garlic cloves and cook for another minute until fragrant.
- Add the main ingredients:
- Wash and roughly chop 4 medium zucchini (about 2 pounds total), then add them to the pot along with ½ cup raw cashews, 4 cups vegetable or chicken broth, 1 teaspoon salt, and ½ teaspoon black pepper. The cashews will soften as everything cooks together.
- Simmer until tender:
- Bring the mixture to a boil, then reduce heat to low, cover, and simmer for 15-20 minutes until the zucchini is completely tender and easily pierced with a fork. The cashews should be soft enough to blend smoothly.
- Add brightness and herbs:
- Remove from heat and stir in ¼ cup fresh lemon juice, ¼ cup chopped fresh parsley, and 2 tablespoons chopped fresh dill. These fresh additions will transform the soup from good to absolutely incredible.
- Blend to silky perfection:
- Using an immersion blender, blend the soup directly in the pot until completely smooth and creamy. Alternatively, carefully transfer to a high-speed blender in batches and blend until velvety smooth, then return to the pot.
- Taste and adjust before serving:
- Check the seasoning and add more salt, pepper, or lemon juice as needed. The soup should taste bright, creamy, and perfectly balanced between the mild zucchini and fresh herbs.

My family was initially skeptical about zucchini soup, thinking it would be bland and boring, but this version completely changed their minds. The creamy texture and bright flavors make it feel indulgent rather than virtuous, and even my veggie-averse teenager asks for seconds. I love watching people's surprised faces when they taste how delicious it is.
Understanding the Cashew Magic
The raw cashews are what make this soup so special - they create that luxurious, creamy mouthfeel without any dairy products. As they cook with the vegetables, they soften completely and blend into the smoothest, richest base you can imagine. If you're worried about the cashew flavor overwhelming the zucchini, don't be - they add creaminess without any noticeable taste.
Choosing the Best Zucchini
For the best soup, choose zucchini that are medium-sized and firm with bright green skin. Avoid the monster zucchini that can be seedy and watery - they'll make your soup less flavorful and potentially bitter. The ideal size is about 6-8 inches long and 2 inches in diameter.
Fresh Herb Combinations That Work
While parsley and dill are my favorite combination, this soup is incredibly versatile when it comes to herbs. Fresh basil creates a more Italian flavor profile, while chives add a subtle onion note. Mint can be surprisingly delicious and refreshing. The key is adding them at the end to preserve their bright, fresh flavor.
Texture and Consistency Perfection
The goal is a soup that's smooth and creamy but not too thick. If it seems too thick after blending, thin it with a little more broth or water. If it's too thin, let it simmer uncovered for a few minutes to reduce. The consistency should be similar to heavy cream - pourable but substantial.
Serving Ideas That Showcase the Soup
This soup is beautiful served hot or cold, making it perfect for summer entertaining. I love garnishing it with a drizzle of good olive oil, some fresh herbs, and maybe a few toasted pine nuts for crunch. A dollop of Greek yogurt or a swirl of coconut milk makes it even more elegant.
After making countless batches of this zucchini soup throughout many summer seasons, I can honestly say it never gets old. There's something so satisfying about transforming those abundant garden vegetables into something so elegant and delicious. Whether served as a light lunch with crusty bread or as an elegant starter for dinner guests, this soup captures the essence of summer in every spoonful and proves that simple ingredients, when treated with care, can create something truly special.
Frequently Asked Questions
- → Can I make this soup without cashews?
- Yes, you can skip the cashews, but the soup won't be as creamy. Try adding a splash of coconut milk or cream instead for richness.
- → How do I store leftover zucchini soup?
- Store in the fridge for up to 4 days or freeze for up to 3 months. Reheat gently on the stove and add a splash of broth if needed.
- → What herbs work best in this soup?
- Fresh dill, basil, and parsley all work great. Dill gives it a fresh summery taste, while basil adds a classic flavor that pairs well with zucchini.
- → Can I use chicken broth instead of vegetable broth?
- Absolutely! Chicken broth adds more flavor and richness. Just note that it won't be vegan anymore if you use chicken broth.
- → Why is my soup too thin or too thick?
- For thinner soup, add more broth gradually. For thicker soup, simmer uncovered for a few extra minutes to reduce liquid, or add more zucchini.
- → Do I need to peel the zucchini?
- No need to peel! The skin adds nutrients and color. Just trim the ends and slice. The blending process will break down the skin completely.