Uh-uh

Does this look like icing to you? 

No, nor me. Either I've got something wrong or Mary Berry, famous tv cook, has.

I thought I'd try her 'favourite traybake' recipe from this month's Sainsburys magazine for Zac's tonight but I'm not convinced by it.

She suggested using a potato peeler to create chocolate curls to decorate the top. When i tried that this is where most of the chocolate went. 

(Obviously it's melted a bit on my hand; I didn't try and peel the chocolate when it was warm.)

P.S. It's turned out better than I anticipated.