Rainbow Jello Cake

Directions

1. 1
   Prepare cake mix as directed.
2. 2
   Put in a 13 x 9-inch pan.
3. 3
   Cool 15 minutes.
4. 4
   Prick holes every 1/2 inch.
5. 5
   (A straw works pretty well to do this.)
6. 6
   Dissolve jello in boiling water.
7. 7
   Add cold water.
8. 8
   Pour jello mix over cake, making sure it goes in the holes.
9. 9
   Chill for 3 to 4 hours.
10. 10
    Top with Cool Whip.