1 sm. box Jello (any flavor)
1 c. boiling water
1 box cake mix
1 sm. container Cool Whip

Fix cake as directed on package. Let cake cool. In small bowl, mix small package of Jello with 1 cup boiling water. Poke holes in cake with toothpick, using a spoon. Spoon Jello over cake. Put in refrigerator to set Jello. Top with Cool Whip.