Lightly grease a tart mould with a removable base (26 cm Ø). Knead 150 g flour, baking powder, 50 g sugar, salt, butter in pieces and 1 egg first with the dough hooks of the hand mixer and then briefly with your hands until smooth
Roll out the dough on a little flour to a circle (approx. 30 cm Ø), line the mould with it and press it into the grooves at the edges. Prick the bottom of the dough several times with a fork. Cover the mould with the dough and leave to cool for about 30 minutes. Then pre-bake in the preheated oven on the 2nd rack from below (electric oven: 200 °C/circulating air: 175 °C/gas: level 3) for approx. 15 minutes
Wash, halve and stone the apricots. Mix yoghurt, 75 g sugar, pudding powder and 2 eggs. Spread on the pre-baked base. Spread the apricots on top. Bake at the same temperature for about 35 minutes
Leave to cool in the mould for about 15 minutes. Then remove from the mould and allow to cool completely. Dust with icing sugar