Polish Cream Custard Cake

Ingredients

• 2 sheets (about 1 lb total) thawed frozen puff pastry sheets
• 2 tablespoons all-purpose flour for dusting
• 2 cups whole milk
• 5 count large egg yolks
• ½ cup granulated sugar
• 3 tablespoons all-purpose flour
• 1 tablespoon cornstarch
• 2 tablespoons unsalted butter
• 1 teaspoon vanilla extract
• 4 count large egg whites
• ¾ cup granulated sugar
• 1 cup sliced almonds

Instructions

1. 1

   Preheat your oven to 400°F. Line two large baking sheets with parchment paper. Remove the 2 sheets of thawed frozen puff pastry from their packaging and keep them between parchment to prevent sticking.

2. 2

   Working with one puff pastry sheet at a time, lightly dust with 1 tablespoon of all-purpose flour and roll it out to fit a baking sheet — it should be thin and roughly rectangular, about 10 by 15 inches. Transfer to a prepared baking sheet and prick all over with a fork to prevent puffing. Repeat with the second sheet on the second baking sheet.

3. 3

   Bake both puff pastry sheets at 400°F for 12-15 minutes, until they are golden brown and crispy. Watch carefully — they should be fully set and lightly blistered on top. Remove from the oven and let cool on a wire rack. Once cool, you may break them into slightly smaller pieces if needed for layering, but aim to keep them as intact as possible.

4. 4

   Pour 2 cups of whole milk into a medium saucepan and set it over medium heat. Bring to a gentle simmer — you'll see small bubbles forming around the edges — then remove from heat and set aside.

5. 5

   In a medium bowl, whisk together 5 large egg yolks and 0.5 cup of granulated sugar until the mixture is pale and thick, about 2-3 minutes of vigorous whisking. The mixture should fall from the whisk in ribbons.

6. 6

   Sift 3 tablespoons of all-purpose flour and 1 tablespoon of cornstarch directly into the egg mixture. Whisk until no lumps remain — this prevents lumpy custard. The mixture should be smooth and pale.

7. 7

   Slowly pour the warm milk into the egg mixture while whisking constantly. This tempering prevents the eggs from scrambling. Once combined, pour the entire mixture back into the saucepan through a fine-mesh strainer to remove any small lumps.

8. 8

   Set the saucepan over medium heat and cook, stirring constantly with a wooden spoon or whisk, until the mixture thickens and comes to a gentle boil, about 5-7 minutes. You'll notice it transitions from thin liquid to a pudding-like consistency that coats the back of the spoon — this is when you know the starch has gelatinized and the custard is set.

9. 9

   Remove from heat and stir in 2 tablespoons of unsalted butter and 1 teaspoon of vanilla extract until the butter is melted and fully incorporated. Transfer the pastry cream to a shallow bowl and press plastic wrap directly onto the surface to prevent a skin from forming. Let cool to room temperature, about 20 minutes, then refrigerate for at least 15 minutes before using.

10. 10

    In a large bowl, beat 4 large egg whites with an electric mixer on high speed until they form soft peaks — this takes about 3-4 minutes. The whites should look foamy and when you lift the beaters, the peaks should curl over slightly.

11. 11

    Gradually add 0.75 cup of granulated sugar, 1 tablespoon at a time, while continuing to beat on high speed. After each addition, beat for 10-15 seconds. Once all sugar is added, continue beating until stiff peaks form — the meringue should be glossy, thick, and when you lift the beaters, the peaks should stand straight up, about 4-5 minutes total.

12. 12

    Place one cooled puff pastry sheet on a serving platter or large cutting board. Spread about half of the cooled pastry cream evenly over the pastry using a spatula or the back of a spoon, leaving a thin border.

13. 13

    Top with the second puff pastry sheet, placing it gently on the cream. Spread the remaining pastry cream over the top layer.

14. 14

    Top with the meringue, spreading it generously and evenly over the entire surface. Create peaks and swirls with the back of a spoon or offset spatula — this allows the meringue to brown beautifully and creates visual appeal.

15. 15

    Sprinkle 1 cup of sliced almonds evenly over the meringue, pressing gently so they adhere. Transfer the assembled cake to the oven on a baking sheet (to catch any drips) and bake at 375°F for 10-12 minutes, until the meringue is golden brown and the almonds are toasted and fragrant. Watch carefully toward the end to prevent burning.

16. 16

    Remove from the oven and let cool for 5-10 minutes at room temperature. This prevents condensation from softening the pastry. Slice with a sharp, serrated knife (dipping it in hot water and wiping between cuts prevents sticking) and serve immediately. Karpatka is best enjoyed fresh but can be refrigerated for up to 4 hours.

Tools you’ll need

• two large baking sheets
• parchment paper
• rolling pin
• fork
• wire rack
• medium saucepan
• medium bowl
• whisk
• fine-mesh strainer
• wooden spoon
• plastic wrap
• shallow bowl
• electric mixer
• large bowl
• spatula
• serrated knife

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