COOK and stir onion in large skillet sprayed with cooking spray on medium heat 5 min. or until onion is tender.
ADD broth, turkey and water. Bring to boil. Reduce heat to medium-low.
STIR in rice and broccoli; cover. Simmer 5 min. until broccoli is crisp-tender; top with cheese. Remove from heat. Let stand, covered, 5 min. or until rice is tender and cheese is melted.