Place the puff pastry slices next to each other and defrost at room temperature for about 10 minutes. Drain peaches and cut into slices. Cut the puff pastry slices in half crosswise once each (10 x 10 cm). Sprinkle thinly with sugar. Roll over with a cake roll with light pressure so that the sugar sticks to the puff pastry. Place the puff pastry slices on 2 baking trays lined with baking paper.
Place peach slices in the middle of each slice. Sprinkle with flaked almonds. Bake the trays one after the other in a preheated oven (electric range: 225 °C/ convection oven: 200 °C/ gas: level 4) for 10-12 minutes. Bring the jam to the boil, pass through a sieve and brush the peaches with the jam while still warm and serve immediately. Delicious with vanilla ice cream