Baguette-style French bread slices, toasted (optional)
Cut mozzarella into ½-inch pieces. Place pieces in a medium bowl. In a small bowl combine oil, vinegar, snipped basil, and pepper. Pour over cheese; toss gently until cheese is well-coated. Cover and chill for 1 hour.
If desired, serve with tomato, basil strips, and bread slices.
To make ahead: Prepare as above through step 1. Store, covered, in the refrigerator up to 3 days. To serve, let stand at room temperature until olive oil liquefies. If desired, serve with tomato, basil strips, and bread slices.