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Last updated on December 16th, 2025.

Karpatka, a delightful Polish dessert, is a true masterpiece that combines layers of delicate choux pastry with a rich and creamy Mousseline filling. This Polish cake originates from the Carpathian Mountains; this pastry has won the hearts of dessert enthusiasts around the world.

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Karpatka cake

Karpatka is a classic Polish cream cake and honestly, it’s just a giant choux à la crème (cream puff), pretending to be a mountain range. Two layers of light, airy choux pastry sandwich a rich crème mousseline filling (thickened pastry cream) that’s silky, creamy, and unapologetically indulgent. Simple ingredients, big payoff.

Those uneven, craggy choux layers aren’t a mistake. They’re meant to mimic the peaks of the Carpathian Mountains, which makes this cake an economical, educational, and very delicious trip to Central Europe. No passport required.

For more Polish recipes and authentic recipes, check out this Polish Apple Cake, and this Israeli Malabi.

Making This Recipe

This cake has two parts: the choux pastry layers, and the creme filling. It is not your everyday dessert you can whip up last minutes, and requires planning and make a head preparations. Please take a moment to carefully read my tips, tricks and lessons I learned while I was testing this recipe(s), they are crafted to help you bake the best cake.

Timeline: start by making the pastry cream creme ahead of time, it should be at room temperature when thickened (adding the butter). The cakes can be made same day, and do need 2-3 hours to chill completely before assembling.

Make the Creme Mousseline

Crème mousseline is chilled pastry cream that is thickened by creaming butter into it. It’s the perfect choice for this cake because it’s thick and stable enough to hold its shape when you slice it. Below are step-by-step images to give you visual cues and guide you with confidence.

If you feel uncomfortable with this option, try the filling I used for this Biscuit cake, or even this Israeli Cheesecake: both are simple, easy and stable enough to hold its shape.

Keep this in mind as you make the creme:

  • Use room temperature ingredients for best results.
  • Keep stirring as you mix the ingredients, it is the best way to make sure the eggs won’t curdle.
  • Use a wooden spoon or a rubber spatula to mix the pastry as it cooks to thickness, some silver tools may contain aluminum which migt give the pastry a grayish, greenish color.
  • The butter and the cream must be at the same temperature (room temperature) when mixed, other wise it may curdle, break, or turn too thin. To bring them to room temperature simply place the butter and pastry cream (hot or cold) on your kitchen counter for 1-3 hours.
A bowl with egg yolk and milk mixture with a fork.
In a medium bowl, mix the egg yolks and cornstarch, then mix in 1/4 cup of the liquids.
Pouring milk into the egg yolk mixture while stirring.
In a medium saucepan, bring the liquids and sugar to a boil. Drizzle 4-6 tablespoons of the hot milk into the egg yolk mixture while stirring.
Pouring egg yolk mixture into a pan with milk.
Pour the egg mixture into the saucepan and cook over medium heat while stirring.
A thickens pastry cream in a pan with a spatula.
Keep stirring until thickened. Pour the cream into a container and place a piece of plastic wrap over the surface.
A pastry cream in a mixing bowl and pieces of butter.
Once the custard cooled to room temperature, place it in a bowl of a stand mixer fitted with the whisk attachment, and gradually add the butter.
Creme mousseline in a bowl of a stand mixer.
You should have a thick creme with the consistency of buttercream.

Make The Choux cakes

  • Allow the flour mixture to chill before adding the eggs to prevent them from cooking. You can stir it to allow the steam to escape.
  • It is very important to allow the choux cakes to cool completely in the oven for about one hour. If removing them too early they may deflate. This is why you should not open the oven door during baking.
  • Divide the dough into two and bake each part individually. We want to have a thick, stable layer of cakes vs. one layer that is sliced into two layers. (If the choux pastry layers are too thin, the whole cake might get soggy.)
A suace pan with choux paste and a wooden spoon.
 In a saucepan, combine water, butter, and salt, and cook it over medium heat until the butter is melted and it reaches full boil. Add the flour and stir as you cook until a dough forms.
A choux paste with an egg in a large bowl and a whisk.
Transfer the dough to a large mixing bowl, mix it on low for about 5 minutes (to cool it down), then add the eggs one at a time.
A choux paste in a large bowl.
Un baked choux paste divided into two pans.
Divide the dough between two eight-inch pans lined with parchment paper and bake.

Assemble

  • Do not assemble the cake before the choux layers have chilled completely.
  • Since the cake can get taller than the sides of the pan, use a removable bottom pan, or a springform pan lined with a wide (4-5 inch) strip of parchment paper around the sides of the pan.
  • If using creme mousseline, refrigerate for a minimum of one hour or until ready to serve. If using a lighter cream, note that it will need longer time to set (at least 4-6 hours).
  • You can top the cream with fresh fruit for a burst of color, texture and flavor.
A cream puff cake in a pan lined with parchment paper.
A cream puff cake in a pan topped with cream.
A cream puff cake filled with cream and another layer of cream puff cake. in a pan lined with parchment paper.
Removing parchment paper from karpatka cake.

Storing

​Karpatka can be stored in the refrigerator for up to 5 days. Cover it with plastic wrap to maintain freshness.

To freeze: place in an airtight container and freeze for up to a month. Thaw it in the refrigerator before serving. Note that it will change the texture into a softer cake.

inside look of Karpatka cake
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Karpatka, Polish Cream Puff Cake

A traditional Polish cake made with two layers of choux pastry (cream puff) filled with a silky vanilla cream. Light, airy, and finished with a dusting of powdered sugar, it’s simple, elegant, and perfect for make-ahead desserts.
Prep Time 40 minutes
Cook Time 30 minutes
Servings 10 people
Author Dikla Levy Frances

Ingredients

  • 1 Cup Water or milk (240ml)
  • 1/2 Cup Unsalted butter cut into 1/2-inch pieces (113g)
  • 1 tablespoon Sugar
  • pinch Salt
  • 1 Cup Bread flour (113g)
  • 4 Large Eggs at room temperature

Filling

Instructions

Make The Cake

  • Preheat oven to 400F (200C), and line two eight-inch pans with parchment paper.
  • Pour the water into a medium saucepan. Add the butter, salt, and sugar and cook over medium heat until the butter has melted and the water is boiling.
  • Add the flour into the water mixture and, over medium heat, use a wooden spoon to stir the mixture until you have a smooth dough ball. About 2-3 minutes.
  • Remove from heat and transfer the dough into a stand mixer bowl. (or a large mixing bowl). Use the paddle attachment to mix the dough on medium-low and cool it down to room temperature.
  • When the dough has cooled down, on high speed, add the eggs one at a time, waiting for each egg to incorporate before adding the next.
    It will look very messy at first, but keep mixing until it is smooth.
  • Divide the dough between the two prepared pans (about 315g each), and bake for 15 minutes, then reduce the heat to 350F and bake for an additional 15 minutes.
    Turn the oven off and let the cake cool inside the oven, door shut, for 10-15 minutes.
  • Remove the cake from the oven and allow it to cool completely before filling.

Assembling

  • Line the sides of one eight-inch springform pan or a pan with a removable bottom with a 5-inch wide piece of parchment.
  • Line one cake layer at the bottom of the pan.
  • Evenly spread the mousseline cream then top it with the second layer.
  • Refrigerate for a minimum of one hour and allow it to set.
  • When ready to serve, invert the cake onto your serving plate and serve.

Notes

    • Store the cake in the refrigerator for up to five days, and keep in mind the freshness of the creme. 
    • DO NOT open the oven door during baking. It will deflate the cakes.
    • Use two 9-inch baking pans for a larger cake with a thinner filling.
    • Fill the cake with your favorite filling, but make sure it is thick enough to hold its shape and not collapse when you slice the cake.
    • Top the cream with fresh fruits or berries for extra flavor before topping with the second layer.
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5 Comments on " Karpatka, A Polish Cream Puff Cake "

  1. Dikla Levy Frances
    Susan says:
    Fri Feb 2 24

    Wow, this looks so delicious. Have to try it soon!

    Reply
  2. Dikla Levy Frances
    Jenn Anderson says:
    Sat Feb 3 24

    This looks delicious! I would like to try it!

    Reply
    1. Dikla Levy Frances
      Dikla says:
      Sat Feb 3 24

      Thank you. It really is just as delicious as it is impressive.

      Reply
  3. Dikla Levy Frances
    Dori says:
    Thu Jul 24 25

    Shouldn’t it be 1/2 cup of butter? 113g is 1/2 cup, not 1 cup. I realized this too late after stirring my flour mixture forever and getting frustrated by the choux not coming together.

    Reply
    1. Dikla Levy Frances
      Dikla Levy Frances says:
      Thu Jul 24 25

      So sorry Dori, it was a typo and you are right 113g is 1/2 cup.

      Reply