1.Preheat oven to 200°C/400°F.
2.Combine tomato and half the vinegar in medium shallow baking dish; spray with oil. Roast, uncovered, about 20 minutes.
3.Lightly spray medium non-stick frying pan; cook mushrooms and remaining vinegar, stirring, over medium heat, until tender. Transfer mixture to serving dishes; cover to keep warm.
4.Heat ham in same pan.
5.Meanwhile, toast bread. Stir herbs into mushroom mixture. Serve ham, mushroom and tomato mixtures with toast.