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Grilled Chicken, Cos, and Tomato Bruschetta

This grilled chicken and romaine bruschetta is a sophisticated, high-protein take on the classic Italian appetiser. By charring the romaine lettuce and plum tomatoes under the grill, you unlock a deep, smoky sweetness that perfectly complements the zestiness of the lemon and parmesan dressing. It is a vibrant, textural dish that feels indulgent yet remains light enough for a nutritious midday meal or a quick evening supper.

Perfect for those seeking a healthy, muscle-building lunch, this recipe uses lean chicken breast and heart-healthy olive oil to deliver a satisfying punch of flavour. The garlic-rubbed toasted Italian bread provides a sturdy base for the succulent chicken and wilted greens. Serve it warm with the remaining mustard-spiked mayonnaise for a delicious balance of creamy and crisp elements.

Continue reading below

Ingredients for Grilled Chicken, Cos, and Tomato Bruschetta

  • 1 (1/2-inch-thick) centre slice from a round Italian loaf of bread

  • 1 tablespoon extra-virgin olive oil plus additional for brushing

  • 45ml mayonnaise

  • 2 teaspoons Dijon mustard

  • 2 tablespoons grated parmesan

  • 1/2 teaspoons grated lemon zest

  • 1 chicken cutlet (about 1/4 inch thick)

  • 1 plum tomato, halved lengthwise

  • 1/4 teaspoons herbes de Provence or dried thyme

  • 1/4 head cos (quarter head lengthwise), tough outer leaves removed and root end kept intact

  • 1 teaspoon fresh lemon juice

  • 1 garlic clove, halved crosswise

Preheat grill.

Brush both sides of bread with oil, then put bread on a large baking sheet.

Stir together mayonnaise, mustard, cheese, and zest in a small bowl, then coat top of cutlet with about 2 tablespoons sauce, reserving remaining sauce. Transfer chicken to baking sheet.

Brush cut sides of tomato with oil and season with salt and pepper, then sprinkle with herbes de Provence. Transfer to baking sheet.

Toss cos with 1 tablespoon oil, lemon juice, and 1/8 teaspoons each of salt and pepper in a bowl until coated. Transfer to baking sheet.

Grill 3 to 4 inches from heat until bread is golden-brown, about 2 minutes. Turn bread and continue grilling until browned, about 2 minutes. Remove toast from grill and continue grilling until cos is wilted and well browned in spots, chicken is just cooked through, and tomato is lightly browned, 1 to 4 minutes more (remove cos, chicken, and tomato as done).

Rub toast with cut side of garlic (reserve other 1/2 clove for another use). Top garlic toast with chicken, lettuce, and tomato. Serve with remaining sauce.

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.

  • 29 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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