Place bread cubes in a single layer in an ungreased 15x10x1-in. baking pan. Bake at 450° for 6-8 minutes or until golden brown, stirring twice. Cool., In a large bowl, combine the tomatoes, mozzarella, yellow pepper and basil. In a small bowl, whisk the oil, vinegar, garlic, salt and pepper. Pour over salad and toss to coat. Sprinkle with croutons.