For the dough put flour, almonds, sugar, salt, vanilla sugar, vanilla pulp, liqueur, fat in flakes and egg in a mixing bowl. Knead with the dough hooks of the hand mixer to a smooth dough. Then knead again briefly with your hands. Wrap the dough in foil and put it in a cool place for about 30 minutes. In the meantime, roast the almonds in a pan without fat at medium heat until golden brown. Remove from the pan and set aside.
Roll out the dough on a floured work surface (approx. 2 mm thick). Cut out hearts of different sizes and place them on 3 baking trays lined with baking paper. Bake one after the other in a preheated oven (electric: 175 °C/ gas: level 2) for 10-12 minutes. Remove from the oven, place on a rack and allow to cool. Spread a thin layer of jam on the cookies. Sprinkle with roasted almond flakes and dust with icing sugar