1. Halve the cherry tomatoes and arrange them in a baking pan with the cut surface facing up.
2. Add thyme in a mortar and mash well. Add oil and mash for about 20 seconds.
3. Sprinkle the tomatoes with sugar, salt and pepper and drizzle with a little oil. Bake the tomatoes at 100c for about 2 hours.
4. Arrange the tomatoes on top of grilled bread and top with plenty of grated Castello Mature Cheddar and a drizzle of the remaining oil.