Wash and clean the blackberries and drain well in a sieve. Put flour, baking powder, quark, oil, milk, salt, 75 g sugar, vanillin sugar and 1 egg into a mixing bowl. Knead with the dough hooks of the hand mixer to a smooth dough. For the icing, mix sour cream, 4 eggs, 100 g sugar and sauce powder with the whisks of the hand mixer. Roll out the quark and oil dough on a floured work surface until round (approx. 30 cm Ø).
Place it in a tart tin (26 cm Ø), pressing the edge down. Sprinkle the base with breadcrumbs. Add blackberries. Spread the icing evenly on top. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 35-40 minutes. In the meantime, melt 60 g sugar in a pan until golden brown. Stir in almonds. Spread almond paste thinly on aluminium foil and let it cool down. Remove the tart from the oven, place it on a cake rack and let it cool down.
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 35-40 minutes. In the meantime, melt 60 g sugar in a pan until golden brown. Stir in almonds. Spread almond paste thinly on aluminium foil and let it cool down. Remove the tart from the oven, place it on a cake rack and let it cool down. Coarsely crumble the almond brittle and sprinkle over the cake
waiting time 1 1/2 hours