Zapiekanka is a Polish street food and can be made with variety of ingredients, mushroom being the most common one.
Prep Time 10 minutes mins
Cook Time 10 minutes mins
Total Time 20 minutes mins
Zapiekanki is considered student snack in Poland. You can prepare and freeze dozen or so ahead of time (minus the baking step) and bake whenever you feel like it. Add about 5 minutes when making them from frozen.