Mix flour, 1 egg yolk, fructose, vanilla pulp, salt and fat flakes to a smooth dough. Cover and chill for about 1 hour. Chop the plums very finely and mix with the jam. Roll out the dough on a floured work surface about 1/2 cm thick. Cut out hearts (4 cm Ø). Spread half of it thinly with the plum mixture. Cut out the middle of the remaining cookies with a small heart shape (2 cm Ø).
Place large hearts on the coated biscuits. Press the edges slightly. Whisk the remaining egg yolk with a tablespoon of water. Spread the biscuits with it and put them on a baking tray lined with baking paper. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 15-20 minutes. Bake small hearts for approx. 10 minutes
, 1 BE (of which 0,5 g fructose)