Bento is not only rice, but also other ingredients, like... pasta. This recipe came to life when I had some uncooked beef left-overs and just wondered what to do with them. Cooking them as a part of bento was a great idea!
This recipe is easy to prepare, cooks in no time and you can prepare everything basically day before if you wish to give the flavors more time to distribute. And because it's cooked with almost no extra fat, it's really lean and healthy for summer dinners, when you don't really feel like eating anything heavy. A massive win!