Preparation time: melt 20 g of fat in a pot. Knead with flour, salt, 2 tablespoons of oil and 150 ml of lukewarm water for about 10 minutes to form an elastic dough. Brush with remaining oil, wrap in foil and let rest at room temperature for at least 1 hour.
Heat 50 g fat in a frying pan and brown the breadcrumbs in it. Peel, quarter, core and cut apples into small pieces. Coarsely chop the almonds. Roll out the dough thinly on a well floured work surface and, if necessary, pull it apart very thinly over the backs of your hands.
Cut off thick edges of the dough. Sprinkle dough with roasted breadcrumbs. Mix apples, almonds, sugar and cinnamon and spread on top. Whip the sides of the dough over the filling and then roll it up carefully.
Place on a baking tray lined with baking paper. Melt the remaining fat in a saucepan and spread half of the strudel on top. Bake in the preheated oven (electric cooker: 175 °C/ gas: level 2) for about 45 minutes.
Brush the strudel with the remaining fat and dust with icing sugar. Arrange on a plate and serve while still warm. Serve with vanilla sauce.