Cut the beef into bite-sized pieces.
Slice the onion thinly.
Beat the eggs in a bowl and set aside.
Heat a little oil in a pan and stir-fry the beef.
When the beef is halfway cooked, add the onion and stir-fry together.
Once the beef is fully cooked, place the beef and onion mixture over the rice.
Cook the beaten eggs in the pan as scrambled eggs and place on top of the rice.
Drizzle mayonnaise to your liking.
Finish by pouring soy sauce over the top.