Published July 7, 2026
Cream of zucchini soup is a smooth, blended soup made with zucchini, onion, and garlic, simmered in broth and finished with a little cream. The trick to a good one is what it leaves out: no potato and no flour. Zucchini blends velvety on its own, so the soup stays naturally low-carb at about 6g net carbs per serving and gluten-free, without any starchy thickener. It comes together in 35 minutes and freezes beautifully for fall.
Cream of Zucchini Soup Quick Stats
Why This Recipe Works
No potato, no flour, no starch: Most zucchini soups lean on a potato or a flour roux for body. This one does not need either, because pureed zucchini is naturally creamy. That single choice is what drops it from around 20g net carbs a serving to about 6g.
Zucchini is a low-carb workhorse: It brings just about 3g of net carbs per cup along with fiber, potassium, and vitamin C, so the pot fills up without the carb count climbing.
A little cream goes a long way: Finishing with a splash of cream adds richness and a silky texture that makes this feel indulgent, not like a diet soup, for very few added carbs.
Made for fall and freezing: It reheats well and freezes cleanly if you hold the cream until serving, so it is an easy make-ahead lunch or starter as the weather cools.
Potato-Thickened Zucchini Soup vs. This No-Potato Velouté
| Feature | Potato-Thickened Version | This Recipe |
|---|---|---|
| Net carbs per serving | About 18 to 22g | About 6g |
| Thickener | Potato or flour roux | None, just blended zucchini |
| Calories per serving | About 200 | About 120 |
| Gluten-free | Only without the roux | Yes, naturally |
| Freezes well | Can turn grainy | Yes, before adding cream |
Here is the full recipe with exact measurements, the no-potato method, and complete nutrition.
Cream of Zucchini Soup | Naturally Low-Carb
Ingredients
Equipment
Method
- Heat the olive oil in a large pot over medium heat. Add the onion and cook, stirring, for 4 to 5 minutes until soft and translucent. Add the garlic and cook for 1 minute more.
- Add the sliced zucchini and cook for about 5 minutes, stirring, until it starts to soften.
- Pour in the broth and bring to a simmer. Cook for 15 to 20 minutes until the zucchini is very tender. No starch is needed to thicken it, the zucchini gives the soup its creamy body on its own.
- Blend the soup until smooth with an immersion blender, or in batches in an upright blender.
- Stir in the cream and season with salt, pepper, and nutmeg. Warm through over low heat without boiling. Taste, adjust the salt, and serve topped with fresh basil and a swirl of cream.
Nutrition
Notes
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Chef Tips for the Best Zucchini Soup
Do not peel the zucchini: The skin is where most of the color and fiber live. Leaving it on gives the soup its gentle green tint and a little more body, with no bitterness.
Sweat, do not brown: Cook the onion and garlic gently until soft and translucent, not golden. Browning adds a savory-sweet note that pulls the soup away from that clean, fresh zucchini flavor.
Do not overcook the zucchini: Simmer just until tender, around 15 to 20 minutes. Overcooking dulls the fresh flavor and the bright color, leaving it drab.
Blend it really smooth: A full minute in the blender is what turns this from a chunky vegetable soup into a proper velvety veloute. Blend in batches and do not overfill with hot liquid.
Add the cream off the heat: Stir the cream in at the end over low heat and do not let it boil, which can make it split. This also keeps the option open to freeze the batch before the cream goes in.
Storage and Serving Suggestions
Refrigerator storage: Keep it covered in the fridge for up to 4 days. The flavor deepens overnight, so it is a great make-ahead lunch or dinner starter.
Freezing: It freezes well for up to 3 months. For the best texture, freeze it before adding the cream, then reheat gently and stir the cream in just before serving.
Reheating: Warm it slowly on the stove over low heat, stirring, and avoid a hard boil once the cream is in so it stays smooth.
Serve it with: Top with fresh basil, a swirl of cream, or toasted pumpkin seeds, and serve with crusty bread or a green salad for a light lunch. For another cozy fall bowl, try our leek and potato soup.
Frequently Asked Questions
Is cream of zucchini soup low-carb?
Yes. Because this version skips the usual potato or flour and gets its creaminess from blended zucchini, it comes to about 6g net carbs per serving. Zucchini itself is very low-carb at roughly 3g net carbs per cup, which is what keeps the whole pot light.
Do you need potatoes in zucchini soup?
No. Potato is often added to thicken zucchini soup, but zucchini blends smoothly and is creamy on its own, so the potato is optional. Leaving it out keeps the soup lower in carbs and lets the fresh zucchini flavor come through.
Can I make cream of zucchini soup dairy-free?
Yes. Use vegetable broth and swap the cream for full-fat coconut cream. The soup stays just as silky and becomes dairy-free and vegan, with only a subtle coconut note. It is naturally gluten-free either way.
Can you freeze zucchini soup?
Yes, it freezes well for up to 3 months. For the best texture, freeze it before adding the cream, since dairy can separate when frozen and reheated. Thaw, warm it gently, then stir in the cream just before serving.
Final Thoughts
A good cream of zucchini soup shows that lighter and richer are not opposites. By skipping the potato and letting the zucchini do the work, you get a velvety, comforting bowl for a fraction of the carbs, ready in about half an hour. Make a big batch, freeze half, and you have an easy fall lunch waiting all season.
Medical Disclaimer: The nutritional information provided in this article is for informational purposes only. While we strive for accuracy, individual responses to foods vary. Always consult with your healthcare provider or registered dietitian about dietary changes.
