Grate marzipan. Mix flour, butter in flakes, sugar, marzipan, orange peel, spice and egg first with the dough hooks of the hand mixer, then with your hands to a smooth dough. Wrap the dough in foil and chill for approx. 45 minutes. Beat the egg white until stiff, add icing sugar and mix well. Then roll out the dough 2-3 mm thick on a floured work surface. Cut out two different heart sizes (5.5 cm + 7 cm height). Line 2-3 baking trays with baking paper and sprinkle with flaked almonds.
Place the hearts on the baking trays and press lightly. If necessary, cut out small holes for hanging up the hearts with a small punched spout at the top. Brush about half of the cut out hearts with egg white powdered sugar mixture. Knead the dough again, roll out and cut out. Bake one after the other in a preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 12-14 minutes. Remove from the oven and allow to cool on a cake rack. Dust with icing sugar if necessary
1 hour waiting time