Who would have thunk that? How do i unbake a cake? And the award winning answer :thumbsup Put it back in the oven, set it to the negative of whatever temp you baked it at, such as -325 degrees, and leave it in for the same amount of time you baked it for. It has to be exact! If you unbake it too much the flour may turn into wheat and the eggs will turn into a chicken. Don't ask me how.