For the crumbled dough, put 750 g flour, 1 pinch of salt, vanilla sugar, sugar, egg, cinnamon and 400 g butter in pieces in a large bowl. First use the dough hooks of the mixer, then work into crumbles with your hands.
Grease a baking tray (approx. 35 x 40 cm). Scarcely 2⁄3 put the crumble on the baking tray and press it to a firm base with your hands. Warm up the jam and spread on the bottom. Mix raspberries and 1 tbsp. flour.
Spread on the jam. Spread the rest of the crumbles on top.
Bake in a hot oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer) on the lowest rack for approx. 50 minutes. Let them cool down. Dust with icing sugar. Whipped cream tastes good with it.