Thaw chicken and cut one side and thru middle to make a pocket. Place chicken in a large casserole pan.
In a separate bowl, mix together cream of chicken soup and 2 to 3 handfuls of Kraft Shredded Cheese. Spoon mixture into chicken pockets until they are full. Once all your chicken breasts are filled up, you should have some mixture leftover. Spread the leftover over the top of the chicken and sprinkle a little more Kraft Shredded Cheese over the top.