Celeriac Soup With Hazelnut Crumble

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This velvety creation transforms humble celeriac through roasting, intensifying its natural sweetness before blending into silky smoothness. The roasted roots develop deep, earthy flavors that pair beautifully with aromatic onion and garlic. A touch of cream adds luxurious body, while warming nutmeg rounds out the European profile. The crowning element arrives as toasted hazelnuts, their crunch and nutty richness creating perfect contrast against the smooth base. Fresh parsley brightens each spoonful, making this ideal for cool weather entertaining or simple weeknight comfort.

Updated on Wed, 28 Jan 2026 12:58:00 GMT
Velvety Celeriac Soup With Hazelnut Crumble served warm in a rustic bowl with a spoon. Save to Pinterest
Velvety Celeriac Soup With Hazelnut Crumble served warm in a rustic bowl with a spoon. | matrixbowl.com

The first time I made celeriac soup was on a brisk autumn evening when the markets were bursting with root vegetables. I'd always walked past celeriac, intimidated by its gnarly appearance, until a farmer convinced me of its delicate, almost nutty flavor. Standing in my kitchen that evening, the aroma of roasted celeriac filled the air as rain tapped against the windows, creating the perfect soundtrack for soup-making.

Last winter, I served this soup at a small dinner gathering where my friend Sara, who claimed to despise all things celery-related, asked for seconds and then the recipe. The golden hazelnuts scattered across the creamy surface had caught her eye first, but it was the depth of flavor that won her over completely. We sat around my dining table long after finishing, warmed from the inside out.

Ingredients

  • Celeriac: Look for a firm, heavy root about the size of a grapefruit, and dont worry about the ugly exterior, its the treasure inside that counts.
  • Potato: This humble addition is my secret for achieving that perfect silky texture without needing excessive cream.
  • Hazelnuts: Splurge on good quality ones if you can, as they really are the crowning glory of this dish.
  • Heavy cream: Just a touch transforms the soup from excellent to extraordinary, though I've made it without when dairy-sensitive friends visit.
  • Nutmeg: Freshly grated makes all the difference, illuminating the earthy notes of the celeriac in a way that feels like magic.

Instructions

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Roast the celeriac:
Preheat your oven to 200°C and spread those celeriac cubes on a baking sheet with a generous drizzle of olive oil. The kitchen will start filling with a sweet, nutty aroma as they turn golden at the edges.
Build the flavor base:
Sauté the onion and garlic until they soften and become translucent, filling your kitchen with that irresistible foundation aroma that promises good things to come.
Simmer to tenderness:
Add your roasted celeriac and potato to the pot with vegetable broth, letting everything bubble away gently until a fork easily slides through the vegetables.
Create the crown:
While the soup simmers, toast those hazelnuts in butter until they release their oils and become fragrant. The sizzle and scent will make your mouth water in anticipation.
Blend to perfection:
Transform the chunky vegetable mixture into liquid silk with your blender, watching as it becomes impossibly smooth and unified.
Enrich and season:
Stir in the cream, nutmeg, salt, and pepper, tasting as you go until the flavor sings. The cream will create beautiful ripples before disappearing into the soup.
Serve with flair:
Ladle the velvety soup into warmed bowls and sprinkle generously with the hazelnut crumble. Each bowl should look like a canvas with golden crunch scattered across the surface.
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Silky smooth Celeriac Soup With Hazelnut Crumble topped with toasted nuts and fresh parsley. Save to Pinterest
Silky smooth Celeriac Soup With Hazelnut Crumble topped with toasted nuts and fresh parsley. | matrixbowl.com

On a particularly difficult day last winter, I found myself making this soup without any specific plan, just needing the therapeutic rhythm of chopping and stirring. As I sat down with a steaming bowl, topped with those golden hazelnuts, I felt my shoulders relax for the first time that day. Sometimes the most nourishing part of food isn't just what's in the bowl, but the act of creating something beautiful from humble ingredients.

Flavor Variations

Over the years, I've played with this recipe depending on what's in my kitchen. Adding a tart apple to the roasting pan with the celeriac brings a subtle sweetness that balances the earthy notes. Sometimes I'll finish the soup with a drizzle of truffle oil instead of cream for dinner parties, which never fails to elicit appreciative murmurs around the table. The soup adapts to your mood and pantry, always maintaining its comforting essence.

Make-Ahead Tips

This soup actually improves with a day of rest in the refrigerator, as the flavors meld and deepen overnight. I often make a double batch, freezing half in individual portions for those evenings when cooking feels impossible but I still crave something nourishing. Just remember to add the hazelnut crumble fresh before serving, as it loses its delightful crunch when stored with the soup.

Serving Suggestions

While this soup shines as a starter, I've turned it into a complete meal on countless occasions by adding thoughtful accompaniments. The silky texture calls for contrast, which makes crusty sourdough bread an ideal partner for dunking and scooping up those last precious spoonfuls.

  • For a light lunch, serve with a simple salad of bitter greens dressed with lemon and olive oil.
  • On chillier nights, a grilled cheese sandwich with gruyere and caramelized onions transforms this into pure comfort food.
  • For entertaining, serve in small cups as an elegant amuse-bouche before the main course.
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Hearty Celeriac Soup With Hazelnut Crumble for cozy dinners, paired with crusty bread on the side. Save to Pinterest
Hearty Celeriac Soup With Hazelnut Crumble for cozy dinners, paired with crusty bread on the side. | matrixbowl.com

This celeriac soup reminds us that beauty often lies beneath the surface, waiting to be discovered and transformed. May each spoonful bring you the same comfort and joy it has brought to my table over the years.

Recipe FAQs

What makes roasted celeriac special?

Roasting celeriac at high temperature caramelizes its natural sugars, creating deeper, sweeter flavors than boiling alone. The golden edges add complexity while the tender interior blends into luxurious smoothness.

Can I make this dairy-free?

Absolutely. Substitute heavy cream with coconut cream, cashew cream, or oat cream. Use olive oil instead of butter for the hazelnut topping. The result remains wonderfully silky and satisfying.

How do I achieve the smoothest texture?

Roast vegetables until completely tender before blending. Use an immersion blender for 2-3 minutes, or a high-speed blender in batches. Adding warm (not boiling) liquid helps achieve velvet consistency without straining.

What if I can't find hazelnuts?

Walnuts, pecans, or toasted pumpkin seeds work beautifully as alternatives. Each brings unique crunch and nutty flavor that complements the earthy celeriac base perfectly.

How long does this keep?

Store cooled soup in airtight containers for up to 4 days. Freeze without cream for up to 3 months. Add cream when reheating. Make hazelnut topping fresh before serving for optimal crunch.

What pairs well with this dish?

Crusty sourdough or baguette slices soak up the silky base beautifully. A crisp Sauvignon Blanc or Chardonnay complements the earthy flavors. Arugula salad with citrus vinaigrette balances the richness.

Celeriac Soup With Hazelnut Crumble

Silky roasted celeriac blended smooth with crunchy toasted hazelnut topping for comforting warmth

Prep Duration
15 minutes
Cook Duration
45 minutes
Overall Time
60 minutes
Created by Zoey Rogers


Skill Level Easy

Cuisine Origin European

Makes 4 Serving Size

Dietary Info Vegetarian-Friendly, No Gluten

What You Need

Vegetables

01 1 large celeriac (about 1.5 lbs), peeled and diced
02 1 medium onion, diced
03 2 cloves garlic, minced
04 1 medium potato (about 5.3 oz), peeled and diced

Liquids

01 3.75 cups vegetable broth
02 2 tbsp olive oil
03 3.4 fl oz heavy cream, optional or plant-based cream for vegan

Seasonings

01 1 tsp sea salt, or to taste
02 0.5 tsp black pepper, freshly ground
03 0.25 tsp ground nutmeg

Hazelnut Crumble

01 2.1 oz whole hazelnuts
02 1 tbsp unsalted butter or olive oil for vegan
03 1 tbsp fresh parsley, finely chopped
04 Pinch of sea salt

How to Make It

Step 01

Roast the celeriac: Preheat oven to 400°F. Spread diced celeriac on a baking sheet, drizzle with 1 tbsp olive oil, and toss to coat. Roast for 25-30 minutes, turning once, until golden and tender.

Step 02

Sauté aromatics: Heat 1 tbsp olive oil in a large pot over medium heat. Add diced onion and minced garlic, sauté for 3-4 minutes until softened and fragrant.

Step 03

Build the soup base: Add roasted celeriac and diced potato to the pot. Pour in vegetable broth and bring to a boil. Reduce heat and simmer for 15-20 minutes, until vegetables are very soft.

Step 04

Prepare hazelnut crumble: Roughly chop hazelnuts. Heat butter in a small skillet over medium heat, add hazelnuts, and toast for 2-3 minutes until golden and fragrant. Stir in chopped parsley and a pinch of salt, then remove from heat.

Step 05

Purée the soup: Using an immersion blender, purée soup until completely smooth. Alternatively, transfer to a stand blender in batches and blend until silky.

Step 06

Finish and season: Stir in cream if using, nutmeg, salt, and pepper. Reheat gently over low heat until soup reaches desired temperature.

Step 07

Serve: Ladle soup into bowls and sprinkle generously with hazelnut crumble. Serve hot.

Tools Required

  • Baking sheet
  • Large pot
  • Immersion blender or stand blender
  • Small skillet
  • Chef's knife

Allergy Details

Check ingredients for allergens; reach out to a healthcare provider if you're unsure.
  • Contains tree nuts (hazelnuts)
  • Contains dairy (cream, butter)

Nutrition (per serving)

This info serves as a general guide and isn't medical advice.
  • Caloric Value: 285
  • Fat content: 19 grams
  • Carbohydrates: 22 grams
  • Proteins: 5 grams