COOK and stir chicken in large nonstick skillet on medium heat 5 min. or until done.
ADD milk, water and Macaroni; stir. Bring to boil; cover. Simmer on medium-low heat 8 to 10 min. or until macaroni is tender, stirring occasionally.
STIR in Cheese Sauce and broccoli; cook and stir 5 min. or until heated through.