Roughly chop the almonds. Put flour, baking powder, 100 g fat, vanillin sugar, sugar, eggs, quark and mascarpone into a mixing bowl. Use the dough hooks of the hand mixer to make a smooth dough. Place the dough on a floured work surface and knead again with your hands. Roll out dough on a floured work surface to a rectangle (32cm x 38 cm). Sprinkle evenly with candied lemon peel, candied orange peel and 100 g almonds. Shape into a stollen.
Place the Stollen on a baking tray lined with baking paper and bake in a preheated oven (electric: 175 °C/ gas: level 2) for 55-60 minutes. After about 45 minutes of baking time cover the stollen with aluminium foil. Take the stollen out of the oven and place it on a rack to cool down. Melt the remaining fat. Spread 1/3 on the still warm stollen and sieve 1/3 icing sugar on top. Repeat the process twice more. Sprinkle with remaining almonds