When using the cake mix extender for chocolate based (ie devils food, chocolate fudge) do you change the extender in any way, say maybe half cup cocoa, half cup flour. (i am using the reciped from this site)

I tried this a couple of weeks ago and my family loved the cake. I used a devils food cake mix with the extender and I used vanilla yogurt. It was delicious! The only thing, it wasn't overly chocolatey (is that a word?) but was still yummy. Maybe the next time I will add a little cocoa powder to the mix. Maybe someone else can help you better then I did.

I just made 2 of these yesterday... I used the cake extender in a dark chocolate mix and used sour cream in mine .. I added some chocolate syrup (just because) ... I taste the batter and it taste wonderful!!