I can't get the coupler out of a canvas pastry bag. I already posted this here, it showed up and now it's gone. My apologies if theoriginal post comes back. I have to get this thing cleaned tonight because it will be disgusting if I don't.
The addition of cinnamon adds a kick of “something special” to this rich chocolate sheet cake, but if you prefer, you can reduce the amount or leave the cinnamon out all together; you'll simply have a delightful, classic chocolate cake on your hands.