Skip to main content

Cauliflower Soup with Hazelnuts and Bacon

This roasted cauliflower soup with hazelnuts and bacon is a sophisticated take on a classic winter warmer. By roasting the cauliflower florets before simmering, you unlock a deep, Nutty sweetness that pairs beautifully with the earthy fennel and aromatic bay leaves. The addition of double cream ensures a velvety, indulgent texture, making it a wonderful dairy-free option if you substitute for a plant-based alternative or simply enjoy the rich depth provided by the roasted vegetables and chicken stock.

Perfect for a weekend lunch or an elegant starter, this savoury soup balances textures with a satisfying crunch from the toasted hazelnuts and crispy bacon lardons. It is a brilliant make-ahead dish, as the flavours develop further after a day or two in the fridge. Serve with crusty sourdough bread for a complete, comforting meal that feels both wholesome and thoroughly luxurious.

Video picks

Continue reading below

Ingredients for Cauliflower Soup with Hazelnuts and Bacon

  • 1/2 cup blanched hazelnuts

  • 1 medium head of cauliflower (about 900g ), cut into small florets

  • 2 tablespoons extra-virgin olive oil, plus more for drizzling

  • Kosher salt, freshly ground pepper

  • 4 slices thick-cut bacon (about 110g )

  • 1 small fennel bulb, chopped

  • 1 small onion, chopped

  • 1 garlic clove, finely chopped

  • 80ml dry white wine or water

  • 1450ml low-sodium chicken broth

  • 3/4 cup double cream

  • 2 bay leaves

Preheat oven to 177°C. Toast hazelnuts on a rimmed baking sheet, tossing occasionally, until golden brown, 10–12 minutes. Let cool, then coarsely chop.

While the nuts are cooling, increase oven to 204°C. Toss cauliflower and 2 tablespoons oil on another baking sheet; season with salt and pepper. Roast, tossing once, until florets are browned all over and tender, 30–35 minutes.

Meanwhile, cut bacon crosswise into 1/2" pieces. Heat a heavy pot over medium and cook bacon, stirring occasionally, until browned and crisp, 10–12 minutes. Transfer to paper towels.

Cook fennel, onion, and garlic in drippings in pot, stirring occasionally, until onion and fennel are very soft, 8–10 minutes. Add wine and cook until mostly evaporated, about 5 minutes. Add roasted cauliflower, broth, cream, and bay leaves; season with salt and pepper. Bring to a boil, reduce heat, and simmer until cauliflower is very tender, 20–25 minutes. Pluck out bay leaves; discard. Let mixture cool slightly.

Working in batches, purée cauliflower mixture until very smooth. Strain back into pot; season with salt and pepper.

Just before serving, ladle soup into bowls; top with bacon and nuts and drizzle with oil.

Soup can be made 3 days ahead. Let cool; cover and chill soup and bacon separately.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

About the authorView full bio

Author image

UK recipe editors

About the reviewerView full bio

Author image

UK recipe editors

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
flu eligibility checker

Ask, share, connect.

Browse discussions, ask questions, and share experiences across hundreds of health topics.

symptom checker

Feeling unwell?

Assess your symptoms online for free

Sign up to the Patient newsletter

Your weekly dose of clear, trustworthy health advice - written to help you feel informed, confident and in control.

Please enter a valid email address

By subscribing you accept our Privacy Policy. You can unsubscribe at any time. We never sell your data.