For the short pastry, grate the parmesan finely. Mix flour, salt, pepper, sugar, 50 g Parmesan, egg yolk and 2-3 tablespoons of cold water in a bowl with the dough hooks of the mixer. Then knead briefly with your hands on a floured work surface.
Roll out the shortcrust pastry on some flour round (approx. 32 cm Ø). Line a greased tart mould with flour and a lifting base (28 cm Ø) with the dough and press it up slightly at the edges. Prick the base several times with a fork and chill for about 40 minutes.
Drain the mozzarella and squeeze it well between two layers of kitchen paper. Then cut into about 16 slices. Wash and halve the tomatoes. Mix almonds and pesto.
Spread the pesto mixture evenly on the ground. Spread tomatoes on top. Dust with icing sugar, sprinkle with 25 g parmesan and cover with mozzarella slices. Bake in the preheated oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer) on the lowest rack for about 45 minutes. Leave to rest in the mould for approx. 5 minutes. Serve hot or cold.