Roll out the short pastry on a floured work surface to a thickness of approx. 3 mm. Cut out about 50 hearts and place them on 2-3 baking trays lined with baking paper. Knead marzipan, eggs and sugar. Pour into a piping bag with a small star-shaped spout and squirt onto the hearts as a border.
Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 12-14 minutes, remove from oven and let cool down. Heat the jellies and fill them into the middle of the biscuits. Let them cool down. Dust with icing sugar