Nothing beats soy sauce and cheese in a bento. Serve as a side dish or with fish meunière. It's low calorie too (only 107 kcal)!
This was my daughter's favorite dish in kindergarten.
In the first step, you can steam by microwave.Also, when I don't have time, I eliminate the steam frying.However, if you don't like the bitterness of spinach, it's better to cook it.
Enjoy Japanese food around the world.