Wash oranges hot, grate them dry and grate the peel thinly. Cut oranges in half and squeeze. Mix orange peel, flour, almonds, baking powder and salt
Melt the butter in a pot at low heat, take it down and let it cool down for about 5 minutes. Beat the eggs and sugar in a bowl with the whisk of the hand mixer for approx. 3 minutes until frothy. Add 150 ml orange juice, butter and vanilla sugar and mix in thoroughly. Quickly fold in the flour mixture. Put the dough into a well greased tart tin (22 cm Ø)
Bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for 20-25 minutes. Remove from the oven and allow to cool completely on a cake rack
Select the raspberries and spread them loosely on the cake. Mix icing sugar and 2-3 tbsp. orange juice to a smooth, viscous icing. Pour the icing into a small freezer bag. Cut off one corner and decorate the cake with it. Let the icing set for about 20 minutes, cut into pieces and serve
waiting time approx. 1 1/2 hours