Step 1

Preheat oven to 350 degrees F. Lightly grease a 9x13" cake pan and set aside.

Step 2

Prepare the cake mix according to package instructions and pour into the prepared cake pan. DO NOT BAKE, set aside.

Step 3

Combine the 2 cups sugar, flour, eggs, lemon zest and lemon juice in a bowl and whisk together until sugar is dissolved. Pour over the prepared cake mix. Bake for 40 to 45 minutes, or until toothpick inserted in center comes out clean.

Step 4

Let the cake cool completely before frosting! Whisk together the lemon pudding mix with the cold milk until smooth and thickened (about 2 minutes), then fold in the thawed Cool Whip, until fully combined.

Step 5

Spread the frosting over the cake and enjoy right away or chill, covered, in the fridge until ready to serve. Enjoy!