Drain the cherries very well in a sieve. Cream butter and 175 g icing sugar with the whisk of the hand mixer. Stir in the eggs one after the other. Mix flour, almonds and cinnamon and stir in portions.
Spread half of the dough on a round pizza tray (26 cm Ø) lined with baking paper (dough is slightly firmer). Cover with baking wafers. Mix cherries and jam, spread carefully on the wafers.
Fill the remaining dough into a piping bag with a perforated spout. Spray a grid on the cherries. Sprinkle with flaked almonds. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 45-50 minutes.
Whisk the egg yolk and cream. 10-15 minutes before the end of the baking time, spread the cake on the grid. Take the cake out of the oven, place it on a grid and let it cool down very well. Dust with 2 tablespoons of icing sugar and sprinkle with sugar crystals.
Carefully lift the cooled cake out of the baking tray with the baking paper. Cut into pieces and serve. Crème fraîche tastes good with it.