Karpatka is a beloved Polish dessert featuring flaky puff pastry layers filled with a luscious, creamy custard, perfect for special occasions or a sweet indulgence.
Next, add the water to the mixture, a little at a time, mixing with your hands or a spoon until the dough comes together. You may not need to use all of the water, so add it slowly. Once the dough forms, divide it into two equal portions. Shape each portion into a disc, wrap it in plastic wrap, and refrigerate it for 30 minutes. Chilling the dough helps make the pastry flaky.
Take one portion of dough and roll it out on a lightly floured surface to about the size of your baking sheet (approximately 11×15 inches). Place the rolled-out dough onto the parchment-lined baking sheet and prick it with a fork to prevent it from puffing up too much while baking.
Repeat the process with the second portion of dough, and place the second sheet of dough on a separate baking sheet. This will give you two layers of pastry, which will later be stacked with custard in between.
In a separate bowl, whisk together the egg yolks, flour, and cornstarch until smooth. Gradually add a little of the hot milk mixture to the egg yolk mixture, whisking constantly to temper the eggs. Slowly pour the tempered egg mixture back into the saucepan with the remaining milk and stir well.
Continue cooking over medium heat, whisking constantly, until the mixture thickens and starts to boil. Once it reaches a thick custard consistency, remove it from the heat and stir in the vanilla extract and softened butter. The butter will melt into the custard, making it rich and velvety. Allow the custard to cool to room temperature.
Place the second pastry layer on top of the custard, pressing it down lightly to help the layers stick together. Make sure the top pastry layer is aligned with the bottom layer for a neat presentation.
Keywords: Karpatka, Polish cream cake, puff pastry dessert, creamy custard cake, traditional Polish dessert
