brushetta is crostini or a small slice of hard bread, saturated with virgin olive oil, covered with diced tomatoes, garlic, and basil, and then doused with olive oil again.
Additional ingredients such as cilantro, red onion, smoked mozarella, grated parmesean or bits of kalamata olive are the prime candidates for extras. I have had a bruchetta recently that included roasted red pepper in its repertoir. Sun dried tomatoes on bruchetta is bizarre, although possibly delicious.