Zapiekanka is a beloved Polish street food that consists of an open-faced sandwich, typically made with a baguette, mushrooms, cheese, and a variety of other toppings.

This dish became popular in Poland during the 1970s and has since become a staple of Polish cuisine, especially as a quick and satisfying snack.

To make zapiekanka, start by slicing a baguette in half lengthwise. Chop mushrooms and onions, then sauté them until tender. Spread the cooked mushrooms and onions over the baguette slices, top with cheese, and bake until the cheese is melted and bubbly.

While the classic version includes mushrooms and cheese, you can customize your zapiekanka with additional toppings such as ham, salami, peppers, or even pineapple. Some people like to drizzle ketchup or garlic sauce on top for extra flavor.

In Poland, zapiekanka is often enjoyed as a street food, served hot and fresh from food stalls or small eateries. It's a popular choice for a quick lunch or a late-night snack after a night out.

Zapiekanka is relatively low in calories compared to other fast foods, but it can be high in fat and sodium depending on the toppings used. Opting for whole grain baguettes and adding plenty of vegetables can make it a healthier option.