Wash lemon hot, grate dry and thinly grate half of the peel. Knead butter, icing sugar, lemon zest, flour and 1-2 tbsp. cold water with your hands to a smooth dough. Press dough flat, wrap in foil and refrigerate for about 1 hour.
Finely grind 50 g almonds in the universal chopper. Wash, halve and stone the apricots. Sort raspberries. Roll out the dough round (approx. 26 cm Ø) on a floured work surface. Line a greased springform pan (approx. 20 cm Ø) with the dough.
Sprinkle ground almonds on the bottom.
Mix apricots, starch and sugar. Carefully mix in the raspberries and fill into the springform pan like a dome. Fold the excess dough from the rim over the filling. Sprinkle the remaining chopped almonds over the filling and bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see
manufacturer) Bake for 30-40 minutes.
Take the cake out of the oven and let it cool down on a cake rack. Remove from the mould and serve lukewarm or cold. Before serving, dust with icing sugar if necessary.