Preheat your oven to 200 C.
Rub the bottom of your baking dish with one tablespoon olive oil.
Place the halved tomatoes, cut side up, into your baking dish.
Sprinkle with salt, freshly ground pepper and sugar.
Mix the garlic, herbs, bread crumbs, olive oil, salt, pepper and parmesan cheese (optional) in a bowl.
Top the tomato cut sides with the mixture and bake them for 20 to 25 minutes.
You might have to cover the tomatoes loosely with some foil if the topping is browning too quickly.
You can serve the tomatoes hot or at room temperature. They are perfect as a side dish for lamb, chicken, steaks or on its own with some fresh, crusty bread and a glass of chilled Rose wine. If you serve the tomatoes as main dish, count 1 1/2 to 2 tomatoes per person.
Tip: It is important to use fresh bread crumbs, otherwise the dish doesn't work! I usually put my stale sourdough bread in the food processor to make bread crumbs. Then I freeze them for whenever I need breadcrumbs, like in this recipe or for pangrattato (crispy bread crumbs as pasta topping). Be careful not to make the crumbs too fine, you want some texture.