For the vanilla sauce, stir the sauce powder, sugar and 6 tablespoons of milk until smooth. Bring the remaining milk to the boil, stir in the sauce powder and bring to the boil briefly. Pour the sauce into a bowl or pot.
Place the foil directly on the surface so that no skin is formed. Let the sauce cool down.
Rinse and drain the raisins. Peel apples, quarter them, cut out the core. Cut apples into small pieces. Heat 50 g butter, brown sugar and lemon juice in a pot. Add apples and raisins and mix well.
Cover and cook over a low heat for 6-8 minutes, stirring occasionally. Let the compote cool down a little.
Let the strudel dough rest at room temperature for about 10 minutes. Melt 75 g butter in a small pot. Grease a tart mould with a lifting base (26 cm Ø) with some butter. Preheat the oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see
manufacturer). Place the first strudel sheet in the mould so that half of the dough protrudes. Brush with some butter. Place the remaining sheets of dough in a circle, overlapping slightly, until the circle is complete and all sheets are used up.
Brush each with butter.
Spread the almonds on the ground, add the compote. Fold over the excess dough towards the middle. Spread with rest of butter. Bake in a hot oven for about 40 minutes. Take out, let cool down a little.
Dust with icing sugar and serve warm with vanilla sauce. Whipped cream tastes good with it.