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Caramelized-Onion, Rosemary, and Pine Nut Topping

Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026

Meets Patient’s editorial guidelines

This aromatic caramelised onion, rosemary and pine nut topping is a versatile addition to any plant-based repertoire. By slowly cooking the onions until they reach a rich, golden hue, you draw out their natural sweetness, which provides a beautiful contrast to the earthy fragrance of fresh rosemary. The addition of toasted pine nuts at the final stage introduces a sophisticated buttery crunch that elevates the overall texture.

As a delicious vegan condiment, this topping is remarkably flexible for various dining occasions. It works exceptionally well scattered over a homemade focaccia, stirred into a savoury tart filling, or served alongside roasted root vegetables. Prepared in advance, it develops even deeper flavours, making it a practical choice for stress-free entertaining or simple midweek meal upgrades.

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Ingredients for Caramelized-Onion, Rosemary, and Pine Nut Topping

  • 1 tablespoon butter

  • 60ml olive oil

  • 575g onions, thinly sliced

  • 1 tablespoon chopped fresh rosemary

  • 1/2 teaspoons fine sea salt

  • 3 tablespoons pine nuts, toasted

How to make Caramelized-Onion, Rosemary, and Pine Nut Topping

Melt butter with oil in heavy large skillet over medium-high heat. Add onions; sauté until tender, about 5 minutes. Reduce heat to low; mix in rosemary and salt. Sauté until onions are golden, about 30 minutes. Season with pepper. Cover and chill up to 3 days. Stir in pine nuts before using.

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.

Article history

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

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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