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Chocolate Custard Cake: The Ultimate Decadent Dessert


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  • Author: Emma
  • Total Time: 13 hours 20 minutes
  • Yield: 10–12 servings

Description

Indulge in the ultimate decadent dessert with this Chocolate Custard Cake. Featuring a buttery Oreo biscuit base and a silky chocolate custard layer, this treat is perfect for special occasions or simply spoiling yourself. Rich, creamy, and utterly irresistible, it’s a dessert that will have everyone coming back for seconds.


Ingredients

For the Base:

  • 200g (7 oz) Oreo cookies
  • 60g (4 tbsp) unsalted butter, melted

For the Custard:

  • 3 cups full-fat milk
  • 2 tsp vanilla extract
  • ⅔ cup caster sugar
  • 67 large egg yolks (120g)
  • 5 tbsp (50g) cornflour (cornstarch)
  • 200g (7 oz) dark chocolate (70%), finely chopped

Optional Garnishes:

  • Chantilly cream
  • Fresh berries
  • Icing sugar

Instructions

  • Prepare the Cake Pan:
    • Flip the base of a 20cm (8”) springform pan upside down, grease it with butter, and place a square of baking paper over it.
    • Clip the sides of the pan onto the base, leaving the excess paper hanging out.
  • Preheat the Oven:
    • Preheat your oven to 180°C (350°F) or 160°C (fan-forced).
  • Make the Custard:
    • Heat the milk, vanilla, and half the sugar in a saucepan over medium-high heat until just before boiling. Stir to dissolve the sugar.
    • In a large bowl, whisk the egg yolks, remaining sugar, and cornflour until smooth.
    • Gradually whisk the hot milk into the yolk mixture to temper the eggs. Return the mixture to the saucepan and cook over medium-low heat, stirring constantly, until thickened (about 3–5 minutes).
    • Once thick, whisk vigorously for 45 seconds after bubbles appear, then remove from heat.
    • Stir the chopped chocolate into the custard until fully melted and smooth. Transfer to a bowl and cover with cling wrap, pressing it onto the surface to prevent a skin from forming.
  • Make the Biscuit Base:
    • Crush the Oreos in a food processor or by placing them in a sealed bag and crushing with a rolling pin.
    • Mix the crumbs with the melted butter until the texture resembles wet sand.
    • Press the mixture evenly into the prepared pan using the bottom of a flat cup.
  • Assemble and Bake:
    • Whisk the cooled custard until smooth and pour it over the biscuit base. Smooth the top with a spatula.
    • Bake for 60 minutes, rotating the pan after 45 minutes. The custard should still wobble slightly when done.
  • Cool and Chill:
    • Cool the cake at room temperature for 3 hours, then refrigerate for at least 12 hours to fully set the custard.
  • Serve:
    • Remove the springform sides and slide the cake off the base using the overhanging baking paper.
    • Slice into portions and serve chilled or at room temperature, garnished with Chantilly cream, fresh berries, and a dusting of icing sugar.

Notes

  • Use high-quality chocolate (70% cocoa) for the best flavor.
  • Stir the custard constantly to prevent lumps or curdling.
  • Ensure the cake is fully chilled before slicing for clean portions.
  • Store in the refrigerator for up to 5 days.
  • Prep Time: 20 minutes
  • Cook Time: 60 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: International