For 1 batch(es) ()
1. Cut the onion into half rings, set the mode "FRY" for 5 minutes, fry the onion in vegetable oil. Postpone.
2. Cut the mushrooms into thin strips, put in a multicooker bowl, add water. Set the mode "SOUP" for 10 minutes.
3. Put beans, potatoes cut into small cubes in the mushroom broth, set the SOUP mode for 10 minutes.
4. Season the mushroom soup with onions sautéed in butter.