1. In small bowl, combine olive oil and garlic. Microwave on high 30 seconds. Reserve 1 tablespoon garlic oil for grilled bread. Stir the vinegar, salt, and pepper into remaining garlic oil to make dressing.
2. In large bowl, gently stir together tomato pieces, basil, and dressing.
3. Brush bread slices with reserved oil, and serve with tomato mixture.