For the dough, wash the potatoes and cook in boiling water for about 25 minutes. Drain, rinse with cold water, remove the skin and press through a potato press while still hot. Let it cool down. Put 125 g flour, 50 g butter, salt, cinnamon and 1 tablespoon brown sugar in a bowl and knead everything into a smooth dough. Cover with foil and chill for at least 2 hours. (The dough is soft, but can be rolled out after cooling)
Grease a pie mould (1.25 litre capacity). Peel, quarter and core apples. Cut crosswise into thin slices. Mix with lemon juice, 50 g sugar, 45 g flour and cranberries. Roll out half of the dough on a floured work surface until round (approx. 24 cm Ø). Line a mould with it, sprinkle the base with almonds. Spread the apple mixture on top. Roll out the remaining dough on a floured work surface. Cut out 3 stars in the middle with two star cutters (4 + 4.5 cm Ø). Place the dough sheet on the cake. Cut off any protruding edges, press the dough together with your fingers at the edges
Melt 2 tablespoons of butter and brush the dough with it. Roll out remaining dough and cut out more stars. Decorate the pie with the stars and brush them with butter. Sprinkle with 1 tablespoon of brown sugar. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) on the lower rack for about 45 minutes. Cover if necessary at the end of the baking time. Take out and serve warm
waiting time approx. 3 hours