Karpatka is Polish cream cake. Two layers of choux pastry with custard between. Messy to eat. Worth it.
The Choux Layers
Water, butter, flour, eggs. Same as eclairs basically. Spread thin on baking sheets. Two rectangles, same size.
Bake until puffed and golden. Don’t open the oven door or they collapse. Patience.
Getting Them Flat
They puff unevenly. Put another baking sheet on top for the last few minutes. Flattens them without ruining the texture.
Cool completely before assembling. Warm pastry plus cold cream equals sad soggy mess.
The Custard
Milk, sugar, eggs, cornstarch, vanilla. Cook until thick. Really thick. It needs to hold shape between layers.
Some recipes add butter at the end. Makes it richer. Traditional versions skip it.
Press plastic wrap directly on surface while cooling. Prevents skin.
Assembly
Bottom layer flat side up. All the custard. Top layer flat side down. Press gently.
Dust with powdered sugar. Lots of it. Covers the imperfections.
Eating
Refrigerate for a few hours. The pastry softens slightly. Easier to cut.
Still messy. Custard squishes out the sides. That’s normal. Embrace it.
Best within two days. Pastry gets too soft after that.
