Preheat oven to 350 degrees and spray a 9x13 baking dish with pam baking spray
Using a medium bowl, whisk together the dry ingredients until combined
Using a large bowl, beat together the butter, sugar, vanilla, and eggnog until combined
Beat in the eggs one at a time until combined
Gradually beat in the dry ingredients until combined
Scoop the batter into the baking dish and place into the oven and bake for 30-40 minutes or until a toothpick comes out clean
Using a large bowl and hand mixer, beat the cream cheese, butter, and eggnog until combined and smooth
Gradually beat in the powdered sugar until combined
If the glaze starts to become thick, beat in about 3 tbsp - ¼ C of eggnog
You’ll want the frosting to almost be a glaze-like texture
Pour the frosting over the warm cake and allow it to cool completely before sprinkling on the white chocolate shavings
Enjoy!