Jello Poke Cake

1 package white cake mix
2 - 3 oz. package jello (can use any flavor, I have used strawberry, raspberry or lime)
1 cup boiling water
1/2 cup cold water

Topping:
1 cup cold milk
1 - 3 oz. vanilla instant pudding
1 - 8 oz. cool whip

Prepare and bake cake according to package directions.
(I usually make this in 8 or 9 inch rounds lined with parchment paper but this would be even easier in 13x9 pan unlined.) Cool for 1 hour.

In small bowl, dissolve jello in boiling water, stir in cold water and set aside.

With a wooden skewer, poke holes about 2 inches apart in cooled cake. Slowly pour jello over cake, refrigerate until set.

In a bowl, whisk together milk and pudding mix for 2 minutes. Fold in Cool Whip and spread over cake.