i fount this recipe here some where.....my question is do i let the cake cool befor adding the jello mix or do i add it when the cake is still hot??? Here is the summer cake we love.It's light and sweet, but not rich and heavy. Jello Cake1 box of white cake mix1 box of jello (lime, cherry, or orange)1 bowl of cool-whipPreheat oven to 350*. Mix cake according to box. Mix jello according to box. (Do not add to cake yet, just have it prepared) Bake cake. When baked, pull from oven and with a toothpick poke holes all over cake. Pour Jello mixture slowly over cake...giving it time to absorb. Ice with cool whip...put in frig till ready to serve (about 1 hour) Serve chilled. ( I serve this in the oblong cake pan I cook it in.) HELP IM ABOUGHT TO MAKE THIS TODAY !!!