Raspberry mille feuille with Madagascan vanilla crème pâtissière

INGREDIENTS⁠320 g ready-rolled all-butter puff pastry⁠3 tbsp icing sugar⁠290 ml full fat milk⁠2 egg yolks⁠55 g caster sugar⁠20 g plain flour⁠20 g cornflour⁠Seeds from 1 vanilla pod 160 ml double cream⁠200 g fresh berries⁠⁠METHOD⁠Preheat the oven to 200°C/180°C fan.⁠Unroll the pastry and place on baking parchment on a non-stick baking tray. Dust generously with icing…