In a large mixing bowl, combine the cooked rice, frozen mixed vegetables, soy sauce, sesame oil, beaten eggs, cooked chicken, and chopped green onions.
Transfer the mixture to a greased baking dish and spread it out evenly.
Bake in the preheated oven for 30 minutes, or until the top is golden brown and the casserole is heated through.
Let it cool for a few minutes before serving. Enjoy!
Notes:
This casserole is a great way to use up leftover rice and veggies. Feel free to substitute with any protein you like.