Cut the chicken into pieces, salt, pepper and fry in butter.
Rinse mushrooms, boil and chop.
Put the mushrooms in a pan where the chicken was cooked and fry a little. Add chopped onion, flour and sour cream, pour mushroom broth and bring to a boil.
Fold the chicken in a baking dish, add the gravy, add the greens and simmer in the oven at 200 degrees 30 minutes.