Wash the nectarines, quarter them, remove the stone. Cut the nectarines into slices. Cover and put in a cool place. Meanwhile separate the eggs. Beat the egg yolks, 125 g sugar, vanilla pulp and salt with the whisk of a hand mixer until thick and creamy white (8-10 minutes).
Stir in the quark, sour cream and semolina. Beat the egg whites with the whisks of the hand mixer until stiff. Fold in portion by portion. Fill nectarines evenly into 4 greased portion casseroles or into a large greased casserole dish.
Spread the quark mixture evenly and loosely on top, sprinkle with 25 g sugar and flaked almonds. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 40 minutes. Remove from the oven and dust with icing sugar as desired.