Every Vietnamese family has a version of this. Pork mince is fried with fish sauce and spring onion, beaten egg goes over the top, and the whole thing sets into a thick omelette that gets cut like a pizza.
It is cheap, it is on the table in under twenty minutes, and it is the reason a fridge with six eggs and a small amount of mince is never really empty. Serve with rice, sliced tomato and cucumber, and a small bowl of nuoc cham.