For the dough, put flour, salt, vanilla sugar, sugar, almonds, egg, bitter almond flavour and fat in flakes into a mixing bowl and knead with the dough hooks of the hand mixer. Afterwards knead again with your hands. Cover and put in a cool place for about 30 minutes. Then roll out on a floured work surface to a thickness of approx. 2 mm. Cut out hearts with heart-shaped cutters of different sizes and place them on two 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. In the meantime, sieve icing sugar onto a work surface. Dice the marzipan and knead to a smooth mixture. Knead with red food colouring. Roll out onto a work surface lightly dusted with icing sugar to a thickness of about 1 mm. Cut out the same number and size of baked hearts from the marzipan cover. Heat the jelly in a small pot at low heat while stirring. Spread a thin layer on the cookies and place the matching marzipan hearts on top.
Knead with red food colouring. Roll out onto a work surface lightly dusted with icing sugar to a thickness of about 1 mm. Cut out the same number and size of baked hearts from the marzipan cover. Heat the jelly in a small pot at low heat while stirring. Spread a thin layer on the cookies and place the matching marzipan hearts on top. Dust lightly with icing sugar and serve decorated with violets and mint leaves
Waiting time approx. 30 minutes