Roast sesame seeds in a pan without fat until golden brown. Melt butter. Grind oat cookies finely in a universal chopper. Mix the crumbs, sesame seeds and butter and press them into an oiled springform pan (26 cm Ø) as a base.
Chill for about 30 minutes.
Soak 4 leaves of gelatine in cold water. Mix yoghurt, honey, lemon juice and sugar. Whip cream until stiff. Squeeze out the gelatine, dissolve, mix with 5 tbsp. yoghurt and stir into the remaining yoghurt.
Carefully fold in the cream. Pour yoghurt cream onto the crumb base and smooth it down. Chill for at least 2 hours.
Soak 2 sheets of gelatine in cold water. Select the raspberries and, except for a few for decoration, puree them finely. Squeeze out the gelatine, dissolve it and stir in 5 tablespoons of raspberry puree. Stir the gelatine into the rest of the raspberry puree and carefully spread on the cake.
Chill for at least 1 hour.
Carefully remove the cake from the mould, place on a plate and decorate with the remaining raspberries, dust with icing sugar.