Grease a springform pan (26 cm Ø) and dust with flour. Preheat the oven (electric cooker 175 °C/circulating air: 150 °C/gas: level 2). Finely chop the Amarettini. Roast the hazelnuts in a pan without fat for 2-3 minutes until they smell good.
Take out, let it cool down. Then grind finely.
Melt 200 g butter. Separate the eggs, put the yolks aside. Beat egg whites until stiff. Mix nuts, 200 g flour, baking powder, sugar and Amarettini in a mixing bowl. Then knead the melted butter, milk and egg yolk with the dough hooks of the mixer to a slightly crumbly dough.
Briefly fold in the beaten egg white.
Bake in a hot oven on the middle shelf for 45-50 minutes. Let it cool down. Serve with vanilla ice cream and chocolate sauce.