Take the puff pastry out of the fridge and let it rest for about 10 minutes. Drain the apricots well on a sieve and halve them
Mix flour and sugar in a bowl. Grate the marzipan and add to the flour mixture together with the butter. First knead with the dough hooks of the hand mixer, then with your hands to crumbles
Unroll the puff pastry with the baking paper and place it on a baking tray. Spread the two long sides with cold water, fold each side over towards the middle as an approx. 3 cm wide edge and press down lightly. Mix the jelly and spread a thin layer of it on the puff pastry. Cover with apricots and spread the marzipan crumbles on top
Bake in the preheated oven, lower rack (electric oven: 200 °C/ convection oven: 175 °C/ gas: level 3) for 25-30 minutes. Let the finished strips cool on the baking tray. Dust with icing sugar as desired and cut into strips