MELT 2 Tbsp. of the butter in large nonstick skillet on medium-high heat. Add chicken; cover. Cook 4 minutes on each side or until cooked through. Remove from skillet; cover to keep warm.
ADD water, vegetables and remaining 2 Tbsp. butter to skillet; bring to boil.
STIR in stuffing mix just until moistened. Top with chicken; cover. Reduce heat to low; cook 5 minutes or until heated through.
