Place puff pastry slices next to each other on the work surface and allow to defrost. Cut out approx. 16 circles (approx. 6 cm Ø) with a cookie cutter. Sprinkle the work surface with sugar. Roll out the circles into thin oval plates and place them on a baking tray lined with baking paper with the sugar side facing upwards. Prick several times with a fork. Sprinkle one half with flaked almonds and bake in a preheated oven (electric range: 200 °C/ gas: level 3) for 10-15 minutes. Let it cool down on a cake rack.
Whip the cream and vanilla sugar until stiff, pouring in the cream thickener. Puree half of the raspberries with the hand mixer. Fold the raspberry puree into the cream. Pour cream into a piping bag with a star-shaped spout and squirt onto the puff pastry sheets without almonds. Sprinkle with remaining raspberries and cover with the remaining puff pastry sheets. Results in about 8 pieces