I tore this recipe out of the Kraft magazine a long time ago and finally decided to make it. It definitely has to be chilled, which the magazine version doesn't say. And, WHOOPS! I added 16 oz of Cool Whip, thinking, "There are 8 oz. in a cup and I need 2 cups." I guess it is supposed to be 2 cups by volume, not weight! Silly me! I ended up with enough filling for about three cakes! It was yummy anyway, but I look forward to making it right the next time. (Also, the chocolate topping doesn't really thicken up until cool, by the way.)