Total calories (approx.): 520 calories (how calories are calculated) 
Time needed: 15-20 minutes
A donburi is a bowl of rice with various savory toppings. This bento is donburi-style, since all the savory things are piled on top of a bed of rice. All the juices in the chicken and vegetables run down into the rice, so by lunchtime it’s all very tasty. You may want to bring along a spoon as well as chopsticks or a fork to eat this.
There are only just 2 elements to this bento besides the rice, so it only takes 15 minutes if you can prep the vegetables the night before. As usual, the rice is pre-cooked in a timer-set rice cooker or frozen .Allow 20 if you need to do it in the morning. Vary the vegetables in the stir fry according to what you have on hand.
I saw these tiny organic carrots at the market and I couldn’t resist them. I got the idea for the spicy glazing from a Michelin-starred restaurant , but it’s quick and easy nevertheless.
To make this bento vegan, substitute a vegetarian protein for the chicken.
For the chicken and vegetable stir fry:
For the carrots:
Salt and pepper
1 cup pre-cooked rice, brown or white
The timeline illustrates how to proceed within the 20 minutes. (Click on the image for a larger version.)
As you can see, if you can prep the vegetables and the chicken in advance, you can shave off some minutes.