Obwarzanki
Obwarzanek is the Krakowian bagel. You can get it on virtually every street corner. And while locals will have a favourite stand, I think they are good just about anywhere. They cost about 2-3zł and have toppings like poppy seeds, cheese, salt, or sesame seeds. They make a great breakfast for on the go and on the cheap.
Farmer’s markets
In the warmer months, Krakow houses many markets with fresh local products and prices that can’t be beaten. Even in the winter months you can find cabbage, and cheese, and other products being sold at cheap prices. Check out Nowy Kleparz and Stary Kleparz in the centre of the city, or head out to Plac Imbramowski, which is by far the largest market with a great selection of fresh fruits and vegetables.
Zapiekanki
Zapiekanki are cheap and very filling and are one of the most well known Polish street foods and definitely something recommended trying at least once while in Krakow. Running anywhere from 10-20zł depending on the toppings you choose, these giant (and portable) French-bread pizzas are a winner for everyone. Head to Plac Nowy in Kazimierz and get one from the vendors there. You won’t be disappointed.
Look for the “zestaw dnia”
Many restaurants will offer a special for lunch or dinner. This is essentially a set menu that usually includes a soup, entree, and a drink for anywhere between 20-40zł. Just look for the “zestaw dnia” on menus and ask what is included.
Milk bars
The legendary restaurants of Communist Rule. Milk bars function like a cafeteria and have equally competitive prices. Everything here comes in large, filling portions, and you can try just about every important Polish food here. From kompot, to bigos, to szarlotka, they’ve got everything. Head down Grodzka Street just off of the Main Square and look for the blue sign that reads “Bar Mleczny”. What it’s lacking in atmosphere, it makes up in great prices and yummy food.