Very Very Skinny and Easy Tres Leches Cake

No meat substitutions going on here. But, this one is a real crowd-pleaser.

Very Very Skinny and Easy Tres Leches Cake

1 box Betty Crocker Golden Vanilla cake
3/4 cup Egg Beaters
water
zest of 1 lemon
1 small can sweetened condensed milk
1 can low fat evaporated milk
1 cup 2% milk
1 teaspoon vanilla
1 small container fat-free Cool Whip

1- Prepare the cake on a 9x13 pan, following the package directions, with the following substitutions/additions: Egg Beaters instead of the eggs, and water instead of oil (I think the box calls for 1 1/2 c water and 1/3 c oil, so just add 1 1/2 cup + 1/3 cup water and no oil). After everything is mixed, add the lemon zest. Bake. Cool cake completely in the pan. Poke the cake through with a fork so that the sauce is absorbed.

2- In a large bowl (I like to use a 4-cup Pyrex measuring cup) whisk the condensed milk, the can of evaporated milk, and enough 2% milk to make about 3 1/2 cups of sauce. Add vanilla. Whisk everything well. Pour sauce over cake. Cover and chill for 8 hours. Spread Cool Whip on top.