Miso, Chicken, And Green Onion Soup - cooking recipe

Ingredients

1 tablespoon vegetable oil, or as needed
1 onion, chopped
1 1/2 portobello mushrooms, stemmed and sliced
8 cups low-sodium chicken broth, divided
2 tablespoons miso paste
sea salt and ground black pepper to taste
2 cups cubed, cooked chicken
5 green onions, trimmed and chopped

Preparation

Heat oil in a skillet over medium heat; stir in onion. Cook and stir onion until golden, about 5 minutes. Add mushrooms and cook until softened, about 5 minutes more. Pour in 1/2 cup broth; simmer, stirring occasionally, until liquid is reduced, 8 to 10 minutes.
Whisk miso paste and 2 tablespoons broth together in a bowl. Pour into the vegetable mixture. Season with salt and pepper. Cook and stir to coat the vegetables, about 1 minute. Add chicken meat and the remaining broth. Reduce heat to low and simmer soup until flavors are well blended, about 30 minutes.