Marinate chicken breasts in Balsamic & Basil Dipping Oil for 30-60 minutes. Heat skillet over medium-high heat, add chicken; sauté 3-4 minutes on each side or until chicken is done. Preheat broiler. Top each chicken breast with 1 tablespoon spaghetti sauce and 1 slice cheese, trimmed to fit chicken. Broil until cheese browns. Serve hot. Makes 4 servings.