Peel, quarter, core and cut apples into pieces. Steam them covered with 2 tablespoons lemon juice, 40 g sugar and 3-5 tablespoons water for about 5 minutes. Let the compote cool down
Mix quark, oil, milk and 60 g sugar. Mix 150 g flour and baking powder and knead in. Roll out the dough on a floured work surface to a thickness of about 1/2 cm. Cut out a total of 6 circles with a round cookie cutter or glass (approx. 10 cm Ø)
Put compote on 1 half of each dough. Spread the edges with water, fold over and press on
Place apple pockets on a baking tray lined with baking paper (approx. 35 x 40 cm). Bake in a hot oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for 12-15 minutes. Let them cool down
Stir icing sugar and 1/2-1 teaspoon lemon juice until smooth. Spread the icing with a spoon in strips over the pockets. Sprinkle pistachios over it and let the icing dry