Cut off the stem ends and a thin slice from both ends of the tomatoes. Cut each tomato into two or three thick slices. Arrange the slices in a well-greased shallow baking dish. Sprinkle with garlic, the fresh basil and parsley, salt and pepper. Dot with butter or sprinkle with the olive oil.
Bake at 350°F for 20 - 30 minutes or until the tomatoes are soft, but still hold their shape.