Mix sauce powder with sugar, stir in 6 tablespoons of milk. Bring the remaining milk to the boil, remove from the heat and stir in the mixed powder with a whisk. Bring the sauce to the boil while stirring, pour into a bowl, cover with foil, allow to cool
Peel and quarter the apples and cut out the core. Cut apples into pieces. Heat 50 g butter, brown sugar and lemon juice in a pot. Add the apples and sultanas, cover and stew for 6-8 minutes. Stir in between. Cool the compote in a bowl
Take the strudel dough out of the fridge and let it rest for about 10 minutes. Melt 75 g butter in a pot. Spread the tart tin (26 cm Ø with lift-off base) with it. Starting from the middle, place the first strudel sheet in the tin so that half of the dough protrudes. Spread the pastry sheet with butter. Place the rest of the pastry sheets in a circle, slightly offset, until the circle is complete. Brush each sheet with butter
Spread the almonds on the base, pour in the apple mixture. Fold the excess dough towards the middle, spread with butter. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for about 40 minutes. Take out and let cool down. Dust with icing sugar, cut into pieces and serve lukewarm with vanilla sauce. Whipped cream tastes good with it
Waiting time approx. 30 minutes