Step 1: Ingredients
Go to the store and buy:
1 Box of Cake Mix (I've had good results with the Betty Crocker Variety). You can get any flavour of normal cake mix, but I've found angelfood and Yellow cake to be particularilly delicious.
1/2 Cup Vegetable Oil
(Optional) One jar of Nutella.
That is, if you don't already have them.
You will also need a mixer or a beater and a large bowl, and a cookie sheet.