Zucchini Leek Soup
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This silky zucchini leek soup is simple food at its absolute best. Sweet sautéed leeks, peak-season zucchini, and good stock are blended until smooth and creamy—without a drop of cream.
It’s light enough for the last warm days of summer but cozy enough for those first evenings when you can feel fall creeping in. Serve it with a simple green salad with goat cheese, a slice of sourdough bread, or—my personal favorite—a pile of crispy sourdough croutons right on top.
When Simple Ingredients Are Enough
I will forever be a champion of simple food done right.
When ingredients are at their peak freshness, it really doesn’t take much to turn them into something wonderful. This zucchini leek soup is the perfect example. There are no complicated techniques, no long ingredient list, and no cream needed to give it that gorgeous silky texture.
Just zucchini, leeks, butter, good stock, and a little patience while everything softens.
This is also one of my favorite kinds of transitional meals. Zucchini is still coming in strong from the garden, but suddenly soup sounds good again. It’s the culinary equivalent of wearing a sweater with sandals. We’re not fully committing to fall just yet.
Why Zucchini and Leeks Work So Well Together
Zucchini is mild and naturally becomes incredibly silky when cooked and blended. Leeks bring a soft, sweet onion flavor without overpowering it.
The key is to gently sauté the leeks in butter until they’re tender and fragrant but not browned. Then add the zucchini, stock, and not much else.
Because there are so few ingredients here, good stock matters. Use homemade if you have it, or choose a high-quality chicken or vegetable stock that you genuinely like the taste of.
Let’s Get Cooking!
👩🍳 SERVING SUGGESTIONS:
You can absolutely eat a big bowl of this soup on its own, but I love turning it into a simple meal.
My ideal plate is zucchini leek soup with a crisp green salad, a little goat cheese, and good vinaigrette. A thick slice of sourdough alongside is never a bad idea either.
But the crispy sourdough croutons might be my favorite part. They give the soup exactly what it needs—a crunchy, salty contrast to all that silky zucchini goodness.
Tips and Instructions:
- Clean your leeks well. Leeks often hide grit between the layers—slice first, then rinse in a bowl of cold water and lift them out so the sand sinks to the bottom.
- Sauté the leeks in really good butter. I like to get a little color on the leeks—it brings out their natural sweetness and adds another layer of flavor to the soup.
- Use the best stock you have. Because this soup is so simple, the flavor of the broth really shines. Homemade or high-quality store-bought makes a difference.
- Make it extra silky. If you want a richer texture, blend in 1–2 tablespoons of butter at the end.
- Great for meal prep. This soup keeps beautifully in the refrigerator for up to 4 days and freezes well.
🤓 Abra’s Nutrition Tips!
Zucchini may be the quiet workhorse of the summer garden, but don’t underestimate it. It’s a delicious way to add more vegetables to your day and provides vitamin C, potassium, and antioxidants, particularly when you leave the skin on.
More importantly, this is exactly the kind of vegetable-forward cooking I want you to get comfortable with: start with beautiful seasonal produce, learn a simple method, and let the ingredients do the heavy lifting.
Cooking is not a spectator sport, my friend. Consider me on the sidelines cheering you toward the soup pot.
If you’ve tried this recipe, don’t forget to rate and comment!
🌟🌟🌟🌟🌟
Zucchini Leek Soup
Ingredients
For the soup
- 2 large leeks sliced and washed well
- 2 tbsp salted butter
- 2 large zucchini about 6 cups, chopped into large piece
- 4 cups good-quality chicken stock (or vegetable stock)
- ½ tsp salt
- ¼ tsp ground black pepper
- 2 tbsp chopped chives
Homemade Sourdough Croutons (optional)
- 2 cups sourdough bread cut into cubes
- 1 tbsp olive oil
- pinch salt
- pinch ground black pepper
Instructions
Make the soup
- Sauté the leeks. In a large soup pot, melt the butter over medium heat. Add the sliced leeks and cook for 5–7 minutes, stirring occasionally, until soft and fragrant but not browned.
- Add the zucchini. Stir in the chopped zucchini and cook for 2–3 minutes to lightly soften.
- Add stock and simmer. Pour in the chicken or vegetable stock. Bring to a gentle simmer and cook for 10–12 minutes, or until the zucchini is very tender.
- Blend until smooth. Using an immersion blender (or carefully transferring to a blender), blend the soup until smooth and silky.
- Season and finish. Stir in the salt and black pepper. Taste and adjust seasoning as needed.
- Serve. Ladle into bowls and finish with chopped chives and a handful of sourdough croutons if using.
Optional Homemade Sourdough Croutons
- Preheat oven to 375°F.
- Toss cubed sourdough bread with olive oil, salt, and pepper.
- Spread on a baking sheet and bake for 10–12 minutes, stirring once, until golden and crisp.
- Cool slightly before topping the soup.
Notes
- Clean your leeks well. Leeks often hide grit between the layers—slice first, then rinse in a bowl of cold water and lift them out so the sand sinks to the bottom.
- Use the best stock you have. Because this soup is so simple, the flavor of the broth really shines. Homemade or high-quality store-bought makes a difference.
- Make it extra silky. If you want a richer texture, blend in 1–2 tablespoons of olive oil at the end.
- Great for meal prep. This soup keeps beautifully in the refrigerator for up to 4 days and freezes well.
Nutrition
Meet Abra Pappa, MS, CNS, LDN
Abra is a licensed nutritionist, seasoned home cook, and forever flavor-chaser. She’s spent more than two decades exploring the connection between food and health—and just as long obsessing over what makes something truly delicious. Abra’s Kitchen is where those two loves meet, with recipes that celebrate vegetables, follow the seasons, and make you excited to cook.
