1 Place tomato halves on foil-lined baking sheet. Drizzle each half with some of the canola oil.2 Combine red onion, garlic, salt, pepper and bread crumbs in a small bowl. Stir to combine ingredients. Sprinkle mixture over cut sides of the tomatoes.3 Roast tomatoes at 350F (180C) for 45-60 minutes, or until tomatoes are very tender. Sprinkle fresh herbs over tomatoes and serve immediately.