01 -
Preheat oven to 190°C. Lightly grease a 23-centimetre pie dish or baking dish.
02 -
In a large mixing bowl, vigorously whisk the eggs and milk until thoroughly combined.
03 -
Fold in the shredded cheese, diced onion, cooked vegetables, and bacon or ham if using. Season with salt and black pepper.
04 -
Pour the prepared mixture into the greased baking dish, spreading evenly to ensure consistent baking.
05 -
Transfer to the oven and bake for 30 to 35 minutes, or until the centre is set and the top is lightly golden.
06 -
Allow to cool for 5 to 10 minutes before slicing and serving to enhance texture and prevent crumbling.