380g soft butter
320g chocolate, chopped
300g pistachio nuts, roughly chopped
Preheat your oven to 180℃ and line an oven tray with aluminium foil.
Melt the butter and chocolate together over a very low heat.
Take from the heat and allow to stand for 10 minutes so that it cools down slightly.
Add the eggs, sugar and vanilla to a mixing bowl and beat with an electric whisk until the sugar has dissolved.
Now beat the egg mixture into the chocolate mixture.
Add the flour, salt and nuts and mix through.
Pour the batter into the prepared baking tray and bake for 30 minutes.
The top should be dried and pale and the middle still dark and gooey!!
Enjoy as is or serve slightly warm with vanilla ice cream.