Heat a large skillet or wok over medium heat. Add 2 tablespoons sesame oil to the bottom. Add 1 cup diced white onion,1 ½-2 cups diced ham, and 1 cup frozen peas and carrots, and fry until tender.
Slide the ham mixture to one side of the wok and pour 3 large lightly beaten eggs onto the other side. Use a spatula to scramble the eggs. Once cooked, mix the eggs with the ham mixture.
Add 3 cups cooked rice and 2-3 tablespoons soy sauce to the ham mixture. Stir and fry until heated through and combined. Top with 2 tablespoons chopped green onions if desired and serve.