I love the Black Magic recipe and it's usually a no-fail for me..but I have recently tried baking it in a 9"x13" pan and it keeps sinking in the middle. I have used icing to build it up so it's nice a level when frosted but that is too much frosting to cake. I live in Missouri, my powder and soda are both new and I have not tried a nail yet because I have never needed one in such a small pan, but I will try that tonight. Has anyone had similar issues with this cake? I will add that when I bake this cake in rounds, anything from a 6" to a 9", it bakes perfectly with no sinking.

that's odd--and it's not underbaked/overbaked?

for some reason i think i'd add one additional tablespoon of flour to the 9x13 batch

and watch it like a hawk for the moment it's done

Oh geez, I'm sorry about the typo in my post title..that's embarrassing.

No, not under or overbaked..very stange indeed. The batter is very runny, maybe a bit of extra flour would help. Thank you!

i often make the perfectly perfect hershey cocoa recipe on the can cake and it's way runny too but it bakes great

i did read that some people have trouble with that 'perfectly perfect' one for cupcakes

it's funny how recipes play out sometimes

i used to have one that would sink the 6" cake all the time--all the rest were fine--weird

tipo? tiepoe? typow? oh was theire a mistpeling? 

Ive made this cake at least 100x and sometimes it falls a little in the middle( in a 9x13).  Not sure why, but It still tastes great.  I wouldnt add anymore flour.  Do you weight your flour?

I loved your apology about the typo because I never noticed it. I had to scroll back up to look.