COOK chicken in large covered skillet sprayed with cooking spray on medium-high heat 2 to 3 min. on each side or until chicken is done (170ºF) and browned on both sides. Remove chicken from skillet; cover to keep warm.
ADD vegetables and water to skillet; bring to boil. Stir in stuffing mix just until moistened.
TOP with chicken and cheese; cover. Cook on low heat 5 min. or until cheese is melted.