Place the tomatoes, cut side up, on a wire rack over an oven tray.
Roast on lowest setting for about 8 hours with the door slightly open.
Remove when dry and pliable and pot into about 4 sterilised jars.
Cover totally with olive oil.
Disclaimer:The nutritional information provided is approximate and is calculated using online tools. Information can vary depending on various factors, but we have endeavoured to be as accurate as possible.