Sauté onions, garlic and mushrooms in butter until cooked and set aside

Sauté beef in the same pan you used for the onions. Put pepper, salt and soy sauce until golden brown. Pour beef broth and cook for 20 minutes.

Put sour cream and flour. Simmer for five minutes and pour onion mixture.

Cook egg noodles according to package. Garnish with chopped parsley.