Step 2: Pat-pat-pat it all down
Lightly grease a 13x9 inch pan and dump the base mixture into it.
Get those hands ready again and work on trying to evenly spreading the cake base to the pan. ItÃ¢â¬â¢s okay if you initially doubt the ability for the cake to actually fit the whole length and width of the pan; it'll prove you wrong soon enough.
Don't give up, it'll fit nicely. Just gently edge the mixture from the center of the pan outwards into the corners.
And make sure that you have no holes and that it's as even as possible.