Everyone's favourite brownies!

These never last long in my house, I originally used to make brownies with a really rough recipe, you know one cup of that two of that sorta thing! they never came out well at all! then one day I was having cuppa and a chat with my cousin and she brought out the most TASTY brownies in the world.... so I stole her recipe! in fact she had stolen it from Delia smiths baking cook book! (sorry cant remember its actual name!) the only thing I change is that I don't use chocolate chips as I think they're a bit boring and get kinda lost in the bulk of the brownie! I break up and chunk chocolate into them instead! and they really are amazing!