Preheat oven to 425 F.
Cut roma tomatoes in half lengthwise (no need to remove the stem bit). Place in a large roasting pan (mine is 11x16-inches and a couple of inches deep.) Scatter garlic over-top. Drizzle with olive oil and balsamic vinegar. Sprinkle with oregano, basil, salt and pepper. Toss with a large spoon to coat.