For the cake mix, your choice, I have included in the Recipe Notes for three shortcuts for yellow, chocolate, and spice cake mixes.
Preheat your oven to 180 C (350 F), grease with butter two 9 inch rounds or one 9x13 inch pan.
Add all the ingredients to a mixing bowl, and use an electric mixer on on Low speed and mix until everything is combined. Switch to Medium speed and mix for 4 minutes or until well blended.
Pour into the prepared dish(s) and spread out evenly. Bake for 30 minutes or until toothpick in the center comes out clean.
Remove from the oven and place on a wire rack to cool. For two round cake pans, cool for 15 minutes then loosen edge with a butter knife and turn out the cakes to cool completely. For a 9x13 pan, allow to cool completely in the pan.
When the cake is completely cool, frost with frosting of your choice, and I have listed several shortcuts for frosting in the Recipe Notes section.
Slice, serve, and enjoy.