For roasting tomatoes (makes 1 cup): Preheat oven to 140 C / 280 F and line a baking tray with aluminium foil. Halve or quarter 1 kilo of tomatoes based on their size (you want them to be about 2” X 2” approx). Lay them on the lined tray and drizzle generously with olive oil, about 3-4 tbsp.
Bake the tomatoes in the oven for up to 2 – 3 hours, or until they start to dry and shrivel up (this will depend on the ripeness and/or size of tomato, so keep an eye out after 2 hours).