Jell-O Poke Cake - MMM Good and Light

This is easy and really good. Kids really enjoy it also...
1 package white cake mix
1 package (3 oz.) Jell-O brand gelatin, any flavor
1 cup boiling water
1/2 cup cold water
1 container Cool Whip whipped topping

Prepare cake according to package instructions.
Pour into greased & floured 13" x 9" cake pan.
Bake for 30-35 minutes at 350 degrees.
Remove from oven and let cool 15 minutes.

While cake is cooling, dissolve Jell-O in boiling water.
Add cold water and allow to cool to room temperature.

Next, poke holes all over the cake at 1/2" intervals with a meat fork.
Carefully pour Jell-O over the cake and chill 3-4 hours.
Top with Cool Whip whipped topping.
Cut into squares and garnish with fruit, if desired.