Using a sharp knife, carefully slice your tomatoes into 1/4-inch thick slices; then repeat the same with your mozzarella cheese.
Next, stack a tomato and a mozzarella slice, then wrap a thin slice of prosciutto over the stack. Repeat with the remaining ingredients and arrange them on a nice platter as shown.
Top with fresh basil leaves, then sprinkle with sea salt flakes and freshly ground black pepper. Immediately before serving, drizzle with olive oil and balsamic vinegar.