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!
You can buy thin beaf slices in some grocery shops or butchers. They may be called minute steaks or quick steaks and are a great ingredient that you can use to make a quick donburi (a rice bowl with meat and vegetable toppings). It's so fast to prepare, that you can do everything in the time it takes to cook the rice!
Tomatoes are very healthy thanks to the lycopene, but they also taste amazing when you cook them in a cream soup with a pinch of red pepper and garlic. And herbs, croutons, bread rolls or literally anything you would ever want to put in a cream soup, it's so versatile. And because it's summer time now, you can even let it chill and serve it cold. How cool is that?