Vanilla Custard Cream Squares
(Also known as Vanilla Slice or Custard Slice)
Servings
9–12 squares
Ingredients
For the Pastry
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2 sheets puff pastry (store-bought or homemade), thawed
For the Vanilla Custard Filling
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3 cups whole milk
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½ cup heavy cream (optional, for extra richness)
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¾ cup granulated sugar
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4 large egg yolks
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⅓ cup cornstarch
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2 tablespoons unsalted butter
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2 teaspoons vanilla extract
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Pinch of salt
For the Topping (choose one)
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Powdered sugar, for dusting
or -
Simple vanilla icing: 1 cup powdered sugar + 1 tablespoon milk + ½ teaspoon vanilla extract
Instructions
1. Bake the Pastry
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Preheat oven to 400°F (200°C).
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Place each puff pastry sheet on a parchment-lined baking sheet.
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Prick all over with a fork to prevent puffing too much.
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Bake for 12–15 minutes, or until golden and crisp.
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Cool completely, then trim each sheet to fit an 8×8-inch (20×20 cm) square dish.
2. Make the Vanilla Custard
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In a medium saucepan, heat milk and cream over medium heat until just steaming (do not boil).
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In a separate bowl, whisk together sugar, egg yolks, cornstarch, and salt until smooth and pale.
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Slowly pour the warm milk into the yolk mixture while whisking constantly.
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Return the mixture to the saucepan and cook over medium heat, whisking continuously, until thickened (about 5–7 minutes).
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Remove from heat and whisk in butter and vanilla extract until smooth.
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Let the custard cool slightly (cover with plastic wrap directly on the surface to prevent a skin).
3. Assemble
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Place one sheet of baked puff pastry on the bottom of the baking dish.
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Pour the custard evenly over the pastry.
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Top with the second pastry sheet, pressing gently to secure.
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Chill in the refrigerator for at least 4 hours, or until fully set.
4. Finish and Serve
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Dust the top with powdered sugar or drizzle with vanilla icing.
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Cut into squares using a sharp knife (wipe the blade between cuts for clean edges).
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Serve chilled.
Storage
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Store covered in the refrigerator for up to 3 days.
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Best enjoyed cold for firm, clean layers.
Tips
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For extra flavor, add a scraped vanilla bean or ½ teaspoon of vanilla bean paste to the custard.
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Use a serrated knife to slice without crushing the pastry.
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If you prefer a thicker filling, increase the cornstarch to ½ cup.
Would you like me to include a no-bake version using graham crackers or tea biscuits instead of puff pastry?