Best Leek Soup without Potatoes

Posted on January 2, 2026

By: Betty Miller

Creamy leek soup without potatoes in a bowl, garnished with fresh herbs

Imagine a chilly evening where the sun’s last rays bathe your kitchen in a warm glow, and you’re greeted by the comforting smell of earthy vegetables simmering away in a pot. That’s exactly what the magic of this leek soup without potatoes can do for you. Not only does it take around 30 minutes from start to finish, but it also brings a nutty sweetness and a velvety texture that warms the soul. Packed with vitamins and minerals, this dish is an effortless way to add nutrition to your family’s diet. Ready to get cooking?

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best leek soup without potatoes 2026 01 02 191128 1

Leek Soup without Potatoes


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  • Author: betty-m
  • Total Time: 30 minutes
  • Yield: 4 servings 1x
  • Diet: Gluten-Free

Description

A comforting and creamy leek soup made without potatoes, offering a nutty sweetness and velvety texture packed with nutrition.


Ingredients

Scale
  • 3 leeks (washed and thinly sliced)
  • 3 ribs celery (thinly sliced)
  • 1 small onion (diced)
  • 2 large parsnips (trimmed, peeled, and chopped)
  • ½ teaspoon sea salt
  • ½ teaspoon white pepper
  • ½ teaspoon turmeric
  • 3 cloves garlic (roughly chopped)
  • 1 head cauliflower (roughly chopped)
  • 8 cups veggie stock
  • 8 sprigs fresh thyme (or 1 teaspoon dried thyme)
  • 1 tablespoon light miso paste (whisked into ½ cup warm water)

Instructions

  1. Slice the leeks in half lengthwise, thoroughly wash and dry them, then thinly slice.
  2. Slice the celery and dice the onion.
  3. Peel, trim, and chop the parsnips.
  4. Roughly chop the cauliflower.
  5. Smash the garlic cloves to peel and then roughly chop.
  6. In a large stock pot, sauté the leeks, onion, celery, parsnips, sea salt, white pepper, and turmeric over medium heat until the veggies are soft, about 5-7 minutes.
  7. Stir in the garlic until fragrant, around 30 seconds.
  8. Stir in the cauliflower and vegetable stock, adding enough water to cover the veggies if necessary.
  9. Add the thyme sprigs, bring to a boil, then reduce heat and simmer for 20 minutes until the cauliflower is soft.
  10. Whisk the miso into warm water, then stir into the soup.
  11. Remove thyme stems and purée the soup until smooth.
  12. Taste for seasoning and adjust as needed.
  13. Garnish with sliced green onions and crushed red pepper before serving.

Notes

For a creamy upgrade, swirl in a bit of cream or yogurt before serving. Store leftovers in an airtight container for up to 3 days or freeze for 2 months.

  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Category: Soup
  • Method: Sautéing and Simmering
  • Cuisine: Vegetarian

Nutrition

  • Serving Size: 1.5 cups
  • Calories: 150
  • Sugar: 3g
  • Sodium: 350mg
  • Fat: 2g
  • Saturated Fat: 0g
  • Unsaturated Fat: 1g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 8g
  • Protein: 4g
  • Cholesterol: 0mg

Why This Leek Soup without Potatoes Is Your Go-To Comfort Food

Let’s face it—sometimes you just need a bowl of soup that’s as soothing as it is delicious. This leek soup without potatoes symbolizes comfort while being deceptively light. It’s perfectly creamy thanks to the cauliflower, rich in fiber and vitamin C, which bolsters your immune system. Feasting on this soup means you’re treating your taste buds and doing something wonderful for your body. It’s the perfect dish when you want to impress without the stress.

The Essentials

You’ll want to gather up the following ingredients to get started on this comforting bowl of goodness:

  • 3 leeks (washed and thinly sliced): Look for firm, upright leeks with a vibrant green top.
  • 3 ribs celery (thinly sliced): Fresh celery adds that nice crunch and flavor.
  • 1 small onion (diced): Sweet onion brings depth to the base.
  • 2 large parsnips (trimmed, peeled, and chopped): Adds a unique sweetness and creaminess.
  • ½ teaspoon sea salt: Enhances all those lovely flavors.
  • ½ teaspoon white pepper: A subtle kick without overpowering the soup.
  • ½ teaspoon turmeric: Offers a warm color and anti-inflammatory benefits.
  • 3 cloves garlic (roughly chopped): Because garlic makes everything better!
  • 1 head cauliflower (roughly chopped): The star ingredient for creaminess without the carbs.
  • 8 cups veggie stock: Homemade or store-bought will do just fine.
  • 8 sprigs fresh thyme (substitute 1 teaspoon dried thyme if needed): Offers a fragrant flavor that elevates the soup.
  • 1 Tablespoon light miso paste (whisked into ½ cup warm water): Adds an umami depth to the dish.

Step-by-Step Method

Ready to roll up your sleeves? Here’s how you can transform these humble ingredients into a delicious meal:

  1. Start by slicing the leeks in half lengthwise, thoroughly washing and drying them, then thinly slice. This ensures no grit makes it into the soup.
  2. Slice the celery and dice the onion. Use a sharp knife for clean cuts—precision pays off!
  3. Peel, trim, and chop the parsnips. Their unique flavor will blend beautifully with the other veggies.
  4. Roughly chop the cauliflower, keeping the pieces about the same size for even cooking.
  5. Smash the garlic cloves to peel and then roughly chop. Don’t sweat it if they aren’t finely minced; a rustic chop works great here.
  6. In a large stock pot, sauté the leeks, onion, celery, parsnips, sea salt, white pepper, and turmeric over medium heat until the veggies are soft, about 5-7 minutes. Use vegetable broth or olive oil as your sauté medium; both add flavor!
  7. Stir in the garlic until fragrant, around 30 seconds. You want to awaken those lovely aromas just before adding the rest.
  8. Stir in the cauliflower and vegetable stock. If there’s not enough liquid to cover the veggies, add enough water to do so.
  9. Add the thyme sprigs, bring to a boil, then reduce heat and bring to a simmer over medium heat for 20 minutes until the cauliflower is soft enough to pierce easily with a fork.
  10. Whisk the miso into ½ cup of warm water, then stir into the pot of soup for that balanced salty flavor.
  11. Remove thyme stems and purée the soup with an immersion blender or in batches using a food processor or regular blender until smooth. Pro tip: Don’t overblend if you like a little texture.
  12. Taste for seasoning, adding more salt and pepper as needed.
  13. Garnish with sliced green onions and a sprinkle of crushed red pepper for a pop of color and flavor.

Balanced Bites

For those counting, here’s the nutritional breakdown per serving (about 1.5 cups):

  • Calories: 150
  • Protein: 4g
  • Carbs: 30g
  • Fat: 2g
  • Fiber: 8g

Each bowl helps boost vegetable intake and provides a healthy dose of antioxidants, helping your body battle against inflammation.

Perfect Pairings

This leek soup makes a beautiful standalone dish, but it doesn’t stop there! For a complete meal, serve it alongside a crusty sourdough bread to dip. Its light texture pairs well with a fresh mixed green salad sprinkled with nuts and vinaigrette, especially in the fall when greens are plentiful. Cozy vibes await!

How to Store It Right

Let’s talk about storage because nobody wants a soup mishap. Refrigerate cooled soup in an airtight container for up to 3 days. Want to store it long-term? Freeze portions in freezer-safe bags or containers for up to 2 months. To keep it fresh, lay the bags flat in the freezer—this makes thawing quick and easy.

Pro Tips

  1. Maximize Flavor: Use homemade veggie stock for the best taste; it elevates the entire soup experience.
  2. Creamy Upgrade: For a luxurious finish, swirl in a bit of cream or a dollop of yogurt just before serving.
  3. Texture Play: If you like it chunky, only partial purée the soup. This gives a mix of smooth and rough textures for mouthfeel variety.
  4. Herb Swaps: Fresh herbs like dill or parsley can be swapped for thyme, adding brightness and different flavors.
  5. Make It Ahead: This soup tastes even better the next day, allowing flavors to meld, making it a perfect make-ahead meal.

Flavor Experiments

  1. Seasonal Twist: Add roasted autumn squash for a sweet seasonal flavor that complements the earthiness of leeks.
  2. Gourmet Option: Infuse your broth with saffron threads for a lovely aroma and a touch of elegance.
  3. Playful Addition: Stir in some crumbled feta or goat cheese at the end for a creamy, tangy element.

Learn From My Mistakes

  1. Overcooking the Cauliflower: Too soft is too mushy! Keep an eye on cooking time so it maintains some structure.
  2. Neglecting the Seasoning: Always taste before you finish. A pinch more salt can make all the difference.
  3. Skipping Miso: Don’t skip on the miso—it’s what elevates the entire soup from mundane to magical.
  4. Using Gritty Leeks: Proper washing of leeks is crucial. Ensure they are clean to avoid graininess in your soup.
  5. Not Blending in Batches: If using a traditional blender, don’t overload it. Blend in smaller batches to avoid spills and messy clean-up.

Next-Day Magic

  1. Soup Pasta: Use leftovers as a base for pasta; just cook the pasta separately and swirl it in for a hearty dish.
  2. Veggie Dip: Thicken a portion of the soup in a saucepan and use it as a warm dip for veggies or breads.
  3. Sautéed Greens Stunner: Add leftover soup to sautéed greens like spinach or kale to create a luscious side dish.

Quick Questions

Can I use frozen leeks instead? Absolutely! Frozen leeks or other pre-chopped vegetables can simplify meal prep. Just adjust cooking times as needed.

What’s a good substitute for miso? If you don’t have miso paste, consider adding a splash of soy sauce or nutritional yeast for that umami punch.

Can I make this soup in advance? Yes, it actually tastes better the next day as the flavors meld! Store it in the fridge or freeze as mentioned.

Is this soup gluten-free? Yes, this recipe is naturally gluten-free. Just double-check your stock and miso to ensure they fit your dietary guidelines.

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