For a charcoal grill, place bread slices on the rack of the grill over medium-hot coals. Place tomatoes in a disposable foil pan. Place on grill next to bread. Cover and grill for 1 to 2 minutes or until bread is toasted and tomatoes are charred, turning bread once and shaking pan with tomatoes occasionally. (For a gas grill, preheat grill. Reduce heat to medium-high. Add bread and tomatoes to grill rack. Grill as above.)
Cut bread into 1/2-inch pieces. Slice tomatoes in half. In a large bowl combine bread, tomatoes, cheese, basil, oil, vinegar, and pepper; toss to coat. Makes 4 servings.