Recipe for Karpatka: Polish Vanilla Custard Slice

July 22, 2015

Recipe for Karpatka, a Polish version of a vanilla custard slice is made with sheets of choux pastry filled with a creamy, light layer of custard cream

 

 

Ingredients for Karpatka:

For the choux pastry:
• 125g (4.4oz) unsalted butter, extra for greasing
• 1 cup plain flour
• 1 cup water
• 5 eggs

For the vanilla custard cream:
• 750ml (3 cups) thick pouring vanilla custard
• 2 eggs
• 2 tbsp vanilla extract
• 4 tbsp plain flour
• 2 tbsp cornflour
• 300ml (2 and ¼ cup) thickened cream

To serve:
• icing (powdered or confectioners') sugar

 

Directions for Karpatka:

Preheat oven to 220C (200C fan forced, 425F, gas mark 7).

To make the choux pastry:

In a medium saucepan bring water and butter to a boil. Add flour and mix vigorously with a wooden spoon
until the mixture comes away from the sides and forms a ball. This should only take a few seconds. Transfer dough to a mixing bowl, add eggs one at a time and beat with an electric mixer until glossy and smooth.
Grease a large sheet of non-stick baking paper with extra butter. Spread pastry into a rough rectangle until the dough is only a couple of centimeters thick. Place in the oven and bake for 25 minutes. When ready, remove from the oven and allow to cool on the tray.

In the meantime, make the vanilla custard cream:

Place cream into a mixing bowl and whip with an electric mixer until it’s fairly stiff – be careful not to overwork as it will turn into butter. Set aside.
In a large saucepan, combine custard, eggs, flours and vanilla extract. Whisk until smooth. Place over low heat and cook, whisking, until the custard thickens.
Cool to room temperature, whisking from time to time to prevent the skin from forming.
Add whipped cream to the mixture and whisk through.

To layer vanilla custard slice:

Using a sharp bread knife, cut the pastry in half, the two sides will be your top and bottom.
Spread custard cream over one layer, leaving a 1-inch edge around and top with another pressing down gently.
Trim edges if you want to get perfect squares. Otherwise skip this step if you prefer a more rustic look.

To serve:

Using a sharp bread knife, cut the slice into 8 even squares.
Dust with a little icing sugar and serve.
Notes

Tip: store the slice in the fridge and consume within 2 days. Bring to room temperature before serving. You may need to re-dust with some icing sugar.

 






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