Combine all the biftekia ingredients in a large bowl. Mix thoroughly with your hands until smooth and well combined. For best results, cover and refrigerate for a few hours or overnight.
Divide the mixture into approximately 12 portions, shaping each into a burger patty weighing around 150 grams. This mixture is soft and juicy, making it slightly more delicate to handle, but it produces amazing results.
Optional: For stuffed patties, press a cube of feta into the centre of each portion, then reshape to enclose the cheese.
Preheat the oven to 180°C fan-forced. Arrange the patties on a baking tray lined with baking paper. Bake for 50–60 minutes, flipping after 20 minutes and draining any excess liquid. Flip again after another 20 minutes and cook until browned and done.
Let the patties rest for 5 minutes before serving.
