Place the tomatoes in a baking dish just big enough so they’re tightly packed. Combine everything except the basil in the dish, ensuring the tomatoes are coated in the spices and olive oil.
Place the dish in the oven for 20 minutes until the tomatoes start to blister, then for the last 10 minutes turn on the grill and let them brown.
Serve with fresh basil and warm crusty bread to mop up the juices. A spoonful of the herb pesto on the side works really well too