Make Dashi broth with a Dashi packet. Or you can use any Dashi according to our Dashi recipe.
Cut carrot into matchsticks. Cut onion thinly. Slice green onion finely. Add carrot and onion to hot Dashi, and cook for 2 minutes. Then add steamed rice and cook for a minute.
Dissolve Miso paste in the soup. Add green onion just before serving.