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Slow-Roasted Tomatoes

Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026

Meets Patient’s editorial guidelines

These slow-roasted tomatoes are a wonderful way to intensify the natural sweetness of plum tomatoes, transforming them into succulent gems of concentrated flavour. By cooking them at a very low temperature for several hours, the moisture evaporates slowly, leaving behind a rich, savoury taste that is far superior to shop-bought sun-dried alternatives. The addition of fresh garlic and extra-virgin olive oil ensures every bite is infused with Mediterranean aromatics.

As a diabetes-friendly option, this recipe is naturally low in sugar and packed with heart-healthy fats and antioxidants. They make a versatile addition to your weekly meal prep; try tossing them through a fresh rocket salad, stirring them into wholemeal pasta, or simply serving them alongside grilled fish. They keep beautifully in the fridge, allowing you to add a burst of summer sunshine to any meal.

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Ingredients for Slow-Roasted Tomatoes

  • 1.8kg plum tomatoes, halved lengthwise

  • 6 garlic cloves, minced

  • 80ml extra-virgin olive oil

How to make Slow-Roasted Tomatoes

Preheat oven to 93°C.

Put tomatoes, cut sides up, in 2 large shallow baking pans. Combine garlic and oil and spoon over tomatoes. Season tomatoes with salt and pepper and roast in oven 6 to 8 hours (tomatoes will be reduced in size but will retain their shape). Cool tomatoes.

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.

  • 17 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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