1.Preheat oven to 350 degrees
2.Spray a 9 x 13 baking pan with cooking spray and set aside
3.Prepare and bake cake mix as directed on package using the egg whites, water and oil.
4.With an electric or handheld mixer, mix ingredients for 2 minutes.
5.With a rubber spatula, make sure all ingredients are combined and pour into pan.
6.Bake as directed on package – try not to over bake.
7.Remove from oven and let it cool on wire rack for ten minutes.
8.Poke holes down through cake to bottom of pan with round handle of wooden spoon.
9.Prepare pudding as directed on box.
10.Pour about half of the mixture evenly over warm cake and into holes.
11.Let remaining pudding mixture stand until slightly thickened. Spoon over top of cake and spread.
12.Place in fridge for 30 minutes.
13.Take out, spread whipped topping, garnish with lemon zest and wedge
14.Place in fridge for another 2 hours. Enjoy!