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Ham, Gruyère, and Tomato Toast with Dijon Mustard

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

Meets Patient’s editorial guidelines

This ham, Gruyère and tomato toast is a sophisticated take on the classic grilled sandwich, offering a refined balance of salty, tangy and herbal notes. Using thick-cut sourdough as a sturdy base, the recipe features layers of smoked ham and juicy tomato, all brought together by the sharp heat of Dijon mustard. The nuttiness of the melted Gruyère provides a rich finish, while a scatter of fresh oregano adds an aromatic, savoury touch.

As a high-protein lunch or a quick evening meal, this dish is as practical as it is comforting. It can be assembled in minutes, making it an ideal choice for a nutritious midweek bite or a weekend brunch. Serve these toasted slices alongside a crisp green salad for a complete, satisfying meal.

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Ingredients for Ham, Gruyère, and Tomato Toast with Dijon Mustard

  • 6 thick slices sourdough bread, toasted

  • Country-style Dijon mustard

  • 6 slices smoked deli ham (about 130g )

  • 1 large tomato, cut into 6 slices

  • 230g Gruyère, grated (about 300g )

  • 3 teaspoons fresh oregano

  • Kosher salt, freshly ground black pepper

How to make Ham, Gruyère, and Tomato Toast with Dijon Mustard

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Preheat grill. Line a rimmed baking sheet with aluminum foil.

Spread each toast with mustard, then top each with 1 ham slice and 1 tomato slice. Top evenly with Gruyère and oregano and season with salt and pepper. Arrange toasts on prepared baking sheet and grill until cheese is toasted and bubbling, 3–4 minutes. Serve hot.

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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