Melt 25 g sugar and 1 teaspoon butter over medium heat to a golden yellow caramel. Fold in almond slivers so that they are completely covered with caramel. Spread on oiled aluminium foil and allow to set.
Grind 2/3 of the brittle finely. Knead flour, remaining butter in small pieces, 50 g sugar, ground brittle, egg yolk and 2 tablespoons ice water to a smooth dough. Wrap in foil and chill for about 30 minutes.
Grease 8 tartlet cups (10 cm Ø each) and sprinkle with breadcrumbs. Roll out the dough thinly on a floured work surface. Cut out 8 circles (approx. 12 cm Ø) and press them into the moulds.
Prick the dough several times with a fork and bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 15 minutes. Turn out of the moulds when hot and let cool down. Whip cream powder with 200 ml milk and 250 g quark in a tall beaker for approx. 2 minutes until creamy.
Cold. Spread the quark mixture into the tartlets and put them in a cool place for about 1 hour. Wash, clean and slice the strawberries. Warm up the jam and pass it through a sieve. Cover the tartlets with the strawberry slices and cover with jam.
Whip cream and remaining sugar until stiff and sprinkle onto the tartlets. Serve sprinkled with the rest of the roughly crushed brittle. Makes 8 tartlets.