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Tuna, White Bean, and Red Onion Salad

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

Meets Patient’s editorial guidelines

This tuna and white bean salad is a classic Mediterranean-style dish that relies on simple, high-quality ingredients for its deep flavour. The natural creaminess of the cannellini beans provides a wonderful contrast to the savoury tuna and the sharp, satisfying crunch of thinly sliced red onion. Vibrant and fresh, it makes for an ideal light lunch or a sophisticated side dish for summer gatherings when you want something nutritious but effortless to prepare.

As a heart-healthy choice, this recipe is naturally rich in protein and essential omega-3 fatty acids from the olive oil and tuna. It is a fantastic option for those seeking a balanced, homemade meal that does not compromise on taste. For a complete dinner, serve it with a crusty wholegrain baguette or a crisp green salad tossed in a light lemon vinaigrette.

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Ingredients for Tuna, White Bean, and Red Onion Salad

  • 950ml cooked white beans (see Cannellini Beans with Garlic and Sage ), drained, chilled

  • 1 1/2 170g cans tuna packed in olive oil, drained, broken into chunks

  • 1 small red onion, very thinly sliced (about 350ml )

  • 60ml extra-virgin olive oil

How to make Tuna, White Bean, and Red Onion Salad

Place beans in large bowl. Add tuna and onion; drizzle with oil. Toss gently to combine. Season with salt and generous amount of freshly ground black pepper.

Earthy Feudo Arancio 2006 Nero d'Avola ($8).

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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