Grease a springform pan (26 cm Ø) and dust with flour. Mix flour, baking powder, 150 g sugar and 1 pinch of salt. Add butter in flakes and 1 egg. First knead everything with the dough hooks of the hand mixer and then briefly with your hands to form crumbles.
Scarcely 2⁄3 press the dough crumble in the springform pan as a cake base and press up the edge of the cake by about 2 cm.
Chop dark chocolate. Mix ricotta, amaretto, 1 egg and 100 g sugar. Stir in chocolate and almond slivers. Carefully fold the undefrosted raspberries into the ricotta mixture with a dough scraper.
Pour the ricotta mixture into the mould and smooth it down. Spread the rest of the crumbles on top, rubbing between your fingers. Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer) for approx. 45 minutes.
Remove the cake, place it on a cake rack and let it cool in the mould for about 3 hours.
Remove the cake from the tin and dust the top of the cake with icing sugar. Whipped cream tastes good with it.