Ingredients:
- 300g Digestive Biscuits (or Graham Crackers)
- 120g Unsalted Butter, melted
- 500ml Whole Milk
- 5 tsp Vanilla Bean Paste (or seeds from 1 vanilla pod)
- 4 Large Egg Yolks
- 100g Granulated Sugar
- 40g Cornflour (Cornstarch)
- 300ml Heavy Whipping Cream (chilled)
- 30g Powdered Icing Sugar (sifted)
- Fresh Berries or toasted flaked almonds (for decoration)
Instructions:
- Phase 1: The Base. Line the base of a 9-inch (23cm) springform pan with parchment paper. Crush the biscuits finely and combine evenly with melted butter.
- Press the biscuit mixture firmly and evenly into the base of the prepared pan. Chill the base for at least 30 minutes.
- Phase 2: The Vanilla Pastry Cream. Gently warm the milk and vanilla in a saucepan until just simmering. Remove from heat.
- In a separate bowl, whisk egg yolks, sugar, and cornflour together until pale and smooth.
- Temper the yolks by slowly whisking about half of the hot milk mixture into the yolk mixture to warm them gently.
- Pour the tempered yolk mixture back into the saucepan with the remaining milk. Cook over medium heat, whisking constantly, until the mixture thickens significantly and boils gently for 1–2 minutes.
- Remove from heat, transfer to a clean bowl, press plastic wrap directly onto the surface, and chill completely (at least 2 hours).
- Phase 3: Assembly & Finishing. Whip the cold heavy cream with sifted icing sugar until medium-stiff peaks form.
- Whisk the completely chilled pastry cream briefly to smooth it out. Gently fold about one-third of the whipped cream into the pastry cream to lighten it, then fold in the remaining whipped cream until just combined.
- Take the chilled biscuit base. Place a layer of whole or broken biscuits on top of the base.
- Spread half the vanilla cream mixture evenly over the first biscuit layer. Top with a second layer of biscuits, then spread the remaining cream mixture over the top, smoothing the surface.
- Decorate the top with crushed biscuits or fresh berries. Chill the assembled cake for a minimum of 4 hours, preferably overnight, to set firmly before slicing.