Defrost the puff pastry slices laid side by side. In the meantime, peel, quarter and core apples. Cut quarters into fine slices and sprinkle with lemon juice. Mix in sugar.
Crumble the rusks, put them in a freezer bag and crush them finely with a rolling pin. Roast almond slivers in a pan without fat. Roll out the puff pastry on a floured work surface into 2 squares (40x40 cm each).
Place a square of puff pastry on a kitchen towel. Sprinkle with half the rusk. Arrange apples, raisins, almonds and cranberries on top. Sprinkle with the remaining rusk. Place a second sheet of puff pastry on top.
Form into a strudel with the help of the kitchen towel. Place on a baking tray lined with baking paper. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 45 minutes. After about 30 minutes, brush with whisked egg yolk.
Serve dusted with icing sugar. For the sauce, pour cream into a mixing bowl and whisk until stiff. Let sauce powder trickle in. Flavour with aniseed.
Results in about 15 pieces.