HEAT oven to 350ºF.
SPRAY 24 muffin cups with cooking spray. Gently place 1 won ton wrapper in each cup, with edges of wrappers extending up sides of cups.
BAKE 5 to 7 min. or until lightly browned. (Do not overbake.) Meanwhile, mix remaining ingredients.
FILL won ton cups with cheese mixture. Bake 6 to 8 min. or until cheese is melted.