Preheat oven to 350°F. Grease and flour the cake pans.
Add the cake mix to the mixer.
Add ⅔ cup of melted butter (or 2x the amount of oil specified in the boxed instructions).
Add 4 eggs (or 1 more than the amount specified in the instructions).
Add 1 cup of milk (instead of water).
Mix all together.
Pour the batter into the prepared cake pans.
Bake until a toothpick comes out clean. It may take a few minutes longer than what is indicated on the box.
Add homemade icing to the cake.
