In a small bowl, mix the breadcrumbs, parmesan, thyme and garlic, and season well. Cut the tomatoes in half horizontally. Heat the oil in a large frying pan over medium-high heat and put in the tomatoes cut-side down. Fry for five minutes, until the tops of the tomatoes start to caramelise a bit. Remove from the pan and place cut-side up in a roasting tin; spoon any pan juices into the tomatoes. Sprinkle the breadcrumb mix evenly over the top of the tomatoes and bake for 25-30 minutes, until the tomatoes are softened and the tops golden.
total time: 1 h preparation time: 15 minutes cooking/baking time: 30 minutes