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Flat Beans with Mustard Thyme Vinaigrette

Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 28 Jan 2026

Meets Patient’s editorial guidelines

These flat beans with mustard thyme vinaigrette offer a sophisticated yet simple way to enjoy seasonal produce. By pairing the natural, earthy sweetness of Romano beans with a punchy, herb-flecked dressing, you create a side dish that feels both elegant and restorative. The use of Dijon mustard provides a gentle heat that cuts through the richness of the extra virgin olive oil, while fresh thyme adds a fragrant, woody finish to every bite.

This versatile vegan dish is an excellent accompaniment to roasted root vegetables or a hearty grain salad. Because these beans are equally delicious served warm from the pan or at room temperature, they are a practical choice for entertaining or weekend meal prep. High in fibre and packed with vitamins, it is a healthy, vibrant addition to any plant-based menu.

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Ingredients for Flat Beans with Mustard Thyme Vinaigrette

  • 1 tablespoon cider vinegar

  • 1 teaspoon Dijon mustard

  • 1 teaspoon chopped thyme

  • 1 small garlic clove, minced

  • 60ml extra virgin olive oil

  • 1.1kg Romano (flat) beans, trimmed

How to make Flat Beans with Mustard Thyme Vinaigrette

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Whisk together vinegar, mustard, thyme, garlic, and 1/2 teaspoons each of kosher salt and pepper, then whisk in oil in a slow stream until well-blended.

Cook beans in a large pot of well-salted boiling water until tender, 7 to 10 minutes. Drain, then toss with dressing and season with salt and pepper. Serve warm or at room temperature.

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.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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