In large bowl, combine first 8 ingredients; shape into 6 patties.
To Grill: Spray grill rack with non-stick cooking spray. Using direct heat cooking method, preheat grill to HIGH. Grill patties, covered, to a minimum internal temperature of 160° (4-5 min./side) for medium doneness, basting with pizza sauce. Top with cheese during last 3 min. of grilling time. Serve on ciabatta rolls.