This is sooooooo unbeliveably easy and absolutely scrummy!
It is from Nigellas Express cookery book called Chocolate Pistachio fudge. I made quite a lot of it for the fancy dress party I went to recently but the good news is that you can freeze it ! In fact it tastes a lot better straight from the freezer. However I don't know how long it will last there for as I can hear it calling me whenever I open the freezer door!
You can experiment with different types of nuts or maybe add some dried fruit and it is great as home made presents so thats this xmas presents sorted!