The proja is a traditional flatbread from the Balkan region that is made from cornmeal. It is called proha in Bosnia and Herzegovina.
Preheat the oven to 480 F (250 C).
Pour the mixture into a 10-inch (24 cm) square baking dish previously greased with butter or margarine.
Bake for 20 minutes at 480 F (250 C). Then, lower the oven temperature to 300 F (150 C), and bake for 10 additional minutes.
Cut the proja into 3-inch (8 cm) squares to serve.
You can optionally add crumbled feta cheese to the dough.