Unroll the puff pastry on the baking paper and fold the edges inwards. Roll out round (approx. 34 cm Ø) on a floured work surface. Line a tart tin (26 cm) with parchment paper and line with the dough.
Let the edge of the dough overlap slightly. Keep cold. In the meantime, lightly carve the apricots, blanch with boiling water and after 1 minute rinse with very cold water. Dab apricots dry, peel skin, halve fruits.
Mix the pudding powder with 100 ml milk and sugar until smooth. Boil 700 ml milk. Stir in the pudding powder, bring to the boil and simmer for 1 minute. Fill the pudding into the tart tin and cover with apricot halves.
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-25 minutes. In the meantime, heat up the jam and pass it through a sieve. Take the tart out of the oven and spread the jam on the apricots.
Wash mint, shake dry. Dust mint and tarter rim with icing sugar. Decorate the tart with mint.