500g mixed small tomatoes, such as baby plum, cherry and pomodorino
3 garlic cloves, bashed
3 thyme sprigs
Put the onion in the middle of a large square of double thickness foil. Fold up the sides of the foil to make a baking tray. Scatter the tomatoes on top of the onion and drizzle 3 tbsp olive oil over. Add the garlic and thyme and season. Put the foil on a rack on the barbecue and cook for about 15 mins, or until the onions and the tomatoes are tender. If you are using an oven, put everything into a roasting tray and cook at 220C / fan 200C / gas 7 for 20 mins. Serve with herb omelettes.