How to Make It
Preheat the oven to 200°. Arrange the tomato quarters in a single layer on a rimmed baking sheet. Sprinkle lightly with salt, white pepper and confectioners' sugar. Scatter the thyme leaves over the tomatoes and drizzle with the oil. Bake the tomatoes for about 1 hour, or until very soft. Turn the tomatoes, baste with their juices and bake for about 1 hour longer, or until meltingly tender. The tomatoes should remain moist and soft. Remove from the oven and let cool.