1. Using a sharp knife, cut the tomatoes into thin slices.

2. Drain the mozzarella, if necessary, and cut into slices and stone the black olives before slicing into rings.

3. Layer the tomatoes, mozzarella slices, olives, and basil leaves in 4 stacks, finishing with a layer of cheese on top.

4. Place each stack under a preheated hot broiler for 2-3 minutes or just long enough to melt the mozzarella.

5. Drizzle over the balsamic vinegar and olive oil, and season to taste with a little salt and pepper.

6. Transfer to individual serving plates and garnish with fresh basil leaves.

7. Serve immediately.