Mix flour, icing sugar, salt, egg yolk and butter in flakes, first with the dough hooks of the hand mixer, then with your hands to a smooth dough. Cover and chill for about 30 minutes. In the meantime wash, halve and stone the plums. Cut plums into thin slices. Roll out the dough thinly on a lightly floured work surface.
Cut out 8 circles (each approx. 13 cm Ø). Place in small greased tartlet cups (approx. 10 cm Ø) with lift-off base. Press on the edges and cut off any protruding edges. Prick the base several times with a fork and bake in the preheated oven (electric range: 200 °C/ convection oven: 175 °C/ gas: level 3) on the lower rack for about 15 minutes. Remove the tartlets from the oven. Pour cold milk into a tall mixing bowl. Add the pudding cream and mix with the whisk of the hand mixer. Whip at highest setting for 1 minute. Spread the cream over the tartlets and cover with plum wedges. Bake the tartelettes for another 15-20 minutes at the same temperature.
Add the pudding cream and mix with the whisk of the hand mixer. Whip at highest setting for 1 minute. Spread the cream over the tartlets and cover with plum wedges. Bake the tartelettes for another 15-20 minutes at the same temperature. Remove the tartelettes from the oven, take them out of the tin after about 10 minutes and let them cool down on a cake rack. Sprinkle with icing sugar before serving. Whipped cream tastes good with it
1 hour waiting time