For the Wachauer Schnitten, place all the ingredients for the shortcrust pastry in a bowl and mix with the dough hook or mix on a work surface and quickly work into a shortcrust pastry. Cover with plastic wrap and let rest in the refrigerator for about 2 to 3 hours.
Roll out the dough thinly on a floured work surface or between two baking mats.
For the whipped cream, beat egg whites with sugar in a mixing bowl using a whisk or hand mixer until very stiff. Spread on the dough and wheel out small regular sticks.
Place them on a prepared baking tray and bake in a preheated oven at about 150 °C for 15 to 20 minutes on sight. When cooled, spread jam on one stangerl at a time and place a second one on top.