I have one soon-to-be hedgehog cake baking in the oven as we speak, I have used my usual choc cake recipe which I normally split into two tins, but this time I have put all of it in a Pampered Chef glass bowl to get my hedgehog-ish shape. Tell me, do I need to leave it longer than the usual 25 mins if it is all in one dish? Also I am baking at altitude so should I leave it a bit longer to compensate for that too?