Brownies with a Surprise! with hazelnut

300 g chocolate (whatever you want) 150 g butter or 150 g margarine 300 g brown sugar 200 g flour , for all uses 4 eggs 100 g of coarsely chopped hazelnuts[...]

200 g black chocolate 200 g sugar (or brown sugar) 200 g butter 70 g flour 4 eggs 100 g chopped walnuts (or hazelnuts) 100 g chopped dried fruit, of your[...]