Savory Polish Open-Faced Mushroom and Onion Sandwich (Zapiekanka) Recipe

by Jan Vasil
Savory Polish Open-Faced Mushroom and Onion Sandwich (Zapiekanka) Recipe

Zapiekanka is a popular Polish street food that’s both delicious and easy to make. This open-faced sandwich, topped with mushrooms and onions, offers a savory crunch with every bite.

The simplicity of the recipe, coupled with the nutritional benefits of mushrooms, makes it a quick, healthy choice for any meal of the day.

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Savory Polish Open-Faced Mushroom and Onion Sandwich (Zapiekanka) Recipe

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Recipe by Jan Vasil Course: Recipe book


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  • 1 large 1 baguette, cut in half lengthwise

  • 2 cups 2 fresh mushrooms, sliced

  • 1 large 1 onion, thinly sliced

  • 2 tablespoons 2 olive oil

  • 1/2 teaspoon 1/2 dried thyme

  • Salt and pepper to taste

  • 1 cup 1 grated cheese (e.g., mozzarella or cheddar)

  • Optional: Ketchup or garlic sauce for serving


  • Prepare the Toppings:
  • In a large skillet, heat the olive oil over medium heat.
  • Add the sliced mushrooms and onions, and sauté for about 5-7 minutes until they are soft and slightly golden. Stir in the thyme, salt, and pepper.
  • Assemble the Sandwiches:
  • Preheat your oven to 400°F (200°C).
  • Place the halved baguette on a baking sheet, and cut side up.
  • Evenly distribute the sautéed mushrooms and onions over the baguette halves.
  • Sprinkle the grated cheese on top.
  • Bake:
  • Bake in the preheated oven for about 8-10 minutes, or until the cheese is melted and bubbly, and the edges of the baguette are crispy.
  • Serve:
  • Once baked, remove it from the oven and let it cool for a couple of minutes.
  • Slice each baguette half into smaller pieces, and serve warm with ketchup or garlic sauce if desired.

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What type of mushrooms works best for this recipe?

White button or cremini mushrooms are commonly used but feel free to experiment with other varieties like shiitake or portobello.

Can I add other toppings to my Zapiekanka?

Absolutely! Common additions include ham, sausage, or other vegetables like bell peppers.

What kind of cheese should I use?

Mozzarella and cheddar are popular choices due to their melting qualities, but feel free to use your favorite cheese.

How should I store leftover Zapiekanka?

It’s best enjoyed fresh, but leftovers can be stored in an airtight container in the fridge for up to 2 days and reheated in the oven.

Can I make this recipe vegan?

Yes, simply use a vegan cheese substitute and plant-based bread, ensuring there are no dairy or egg ingredients.

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Dive into the rich tapestry of Central Eastern European culture with “Taste Is Yours,” a culinary journey that celebrates the region’s deep-rooted gastronomic traditions. From the hearty stews of Hungary to the iconic dumplings of Poland, our blog is a tribute to the authentic dishes that have graced family tables for generations.


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