Knead the flour, butter, sugar, salt and 1 egg quickly to form a dough. Wrap the dough in foil and refrigerate for about an hour.
Grease 6 tartlet molds about 12 cm in diameter with butter and line with the dough. Prick the bottom several times with a fork. Pre-bake in the preheated oven on the middle rack at 180 ° C for approx. 15 minutes and allow to cool.
Wash the berries well and let them drain. Whisk the 3 eggs with the cream, powdered sugar, vanilla sugar and vanilla pudding powder. Spread the berries on the tartlet bases, pour the glaze over them and bake for about 30 minutes at 160 ° C on the middle rack.