Lemon Poke Cake

This is very easy to put together and super delicious!  Not too sweet and with just the perfect balance of tartness from the lemon.  Delicious!  Enjoy!
-1 (16.5 oz) box white cake mix
-3 egg whites
-1 cup water
-1/4 cup original applesauce
-2 cups boiling water
-2 (3 oz each) packages lemon flavor gelatin
-1 (3.4 oz) package lemon flavored instant pudding and pie filling
-1 cup cold milk
-8 oz frozen whipped topping, thawed
Preheat oven to 350 F.  Coat a 9x13 baking pan with the baking cooking spray (the one with oil and flour).  Set aside.
Mix together the cake mix, egg whites, water and applesauce.  Mix well and pour into prepared pan.  Bake in preheated oven for about 35 minutes or until toothpick comes out clean.  Remove from oven and let it cool completely in the pan.
Once cooled, poke the cake everywhere with a fork.
Mix the gelatin with the 2 cups of boiling water.  Pour over poked cake.  Refrigerate for 3 hours.
Whip the pudding mix with the cold milk.  Once nice and stiff, add the thawed whipped topping.  Mix very well.  Top the cake evenly with the pudding mixture.  Return to the fridge for at least 1 hour or until ready to serve.
Slice and enjoy!