Process the first 6 ingredients into a batter, place in a baking sheet lined with baking paper, bake for 30 minutes at 170 ° C (top / bottom heat) and allow to cool. Hollow out the bottom with a tablespoon, leaving an edge of approx. 1 cm. Roughly chop the resulting crumbs in a bowl.
In another bowl, mix the quark, honey and lemon juice with a fork. Whip the whipped cream with the cream stabilizer and vanilla sugar until stiff and fold into the quark. Spread the quark-cream mixture on the cake base. Spread 500 g of raspberries on top.
Puree the remaining raspberries with 250 ml water and bring to the boil together with the cake topping and 75 g sugar while stirring. Let cool for 3 minutes and spread on the cake with a tablespoon.
Then sprinkle the hollowed out crumbs on top and decorate with chocolate sprinkles if necessary. Chill for approx. 2 hours.