Stir together drained tomatoes, cheese and basil in medium bowl; set aside.
Pound chicken to 1/2-inch thickness. Top evenly with tomato mixture, pressing onto chicken.
Combine tomato sauce and garlic in large skillet; add chicken. Bring sauce to a boil over medium-high heat. Reduce heat to medium-low, cover and cook 15 minutes or until chicken is no longer pink in centers (165 degrees F). Top with croutons just before serving.