Melt the fat in a pot. Mix flour, 250 g sugar, cinnamon, almonds and salt. Add fat drop by drop and knead with the dough hook of the hand mixer. Grease a baking tray (32x38 cm).
Press half of the dough onto the bottom of the baking tray. Wash and stone the cherries. (Drain cherries from the jar.) Mix milk, sour cream and vanilla sugar. Bring to the boil in a saucepan.
Stir pudding powder with 2 tablespoons of cold water and the remaining sugar until smooth and pour into the boiling liquid. Continue cooking for about 1 minute while stirring. Pour onto the base and smooth it down.
Spread cherries on top. Spread the rest of the dough as crumbles on the cake. Bake in the preheated oven (electric: 200 °C/ gas: level 3) for about 40 minutes. Serve sprinkled with sugar crystals.