Cream soft fat, icing sugar and salt. Knead marzipan and bitter almond oil, then add to the fat-sugar mixture. Add flour and ground almonds. Wrap the dough in foil and refrigerate for 30 to 60 minutes.
Roll out the dough on a lightly floured work surface to a thickness of about three millimetres mm. Cut out 55 hearts (6 cm wide, 4 cm high) and place them on two baking trays lined with baking paper. Mix egg yolk and cream and brush the hearts with it.
Bake in the preheated oven (electric oven: 175 °C/ gas: stage 2) for ten to twelve minutes one after the other. Let them cool down. Roast the almond slivers in a pan without fat until golden yellow, let them cool down. Heat the nougat mass in the closed bowl in a hot water bath.
Pour half of the mixture into a freezer bag, cut off a small corner. Pour a blob on each heart. Sprinkle with almond slivers and let dry. Results in 55 hearts.