Used different ingredients.
I used Cadburys Bournville cocoa powder instead of actual chocolate and added chunks of cadbury's dairy milk instead of walnuts and put some chunks of chocolate on top before baking. Very nice! - 09 Feb 2010
Altered ingredient amounts.
My family & I agree that they are delicious. As another reviewer mentioned the instructions do say to foil & grease the tin, which I did and I had no problems with sticking. Will definitely make these again Edit: I made these again and cut the sugar down, while upping the vanilla to 2 tsp and they were much better. - 21 Jul 2008
Too delicious! I've eaten the lot! I used self-raising flour as had no plain in. Important to use the right size tin (mine flowed over but may have been partly flour's fault). Did not stick to tin - I greased it well. Super recipe! - 04 Jul 2011