Mix all ingredients well and bake in the large, greased baking sheet for about 40 minutes at 200 degrees / hot air / in the preheated oven on the lower rack until golden brown.
If you use a smaller baking sheet, it will take longer.
After baking, cut into the desired squares and serve warm or cold.
This Proja is the basic recipe, but it can be modified. See my recipe Spicy Corn Cake with Cheese and Spinach.
This goes well with mushroom ragout, tzatziki, meatballs, Serbian bean soup, chili con carne, or natural yogurt and ham for breakfast.