Preheat the oven to 350 degrees F. Lightly coat an 8-inch square baking dish with 1 teaspoon of oil. Cut a ½-inch-thick slice off the top of each tomato; reserve the tops. Scoop the seeds, pulp, and juice from each into a small bowl. Place the hollowed tomatoes in the prepared dish. Add ¼ cup of the tomato pulp to the rice and toss to coat. Stir in the basil, parsley, garlic, remaining 2 tablespoons of oil, and ½ teaspoon each of salt and pepper. Stir in the Parmesan and season with more salt and pepper to taste. Spoon the rice mixture into the hollowed tomatoes, mounding slightly. Replace the reserved tops and bake until the rice is heated through, about 20 minutes. Serve hot or at room temperature. (The stuffed tomatoes can be made up to 4 hours ahead.)