This authentic Russian beef stroganoff is made with tender beef, mushrooms, onions and a rich sour cream sauce served over egg noodles for a delicious comfort food meal.
Thinly slice the filet and season it with salt and pepper. Coat it in flour then flash sear it in 2 tbs of butter and oil over medium high heat in a large and set it aside.
In the same skillet, add 1 tbs of butter and sauté the thinly sliced onions for about 4 minutes or until soft. Add the mushrooms and saute for 3 minutes, stirring frequently. Add the garlic and saute for an additional minute.
Sir in the tomato paste and Russian mustard for two minutes. Add the Worcestershire sauce and saute for one minute.
Stir in the beef broth and let it cook for about 5 minutes before turning the heat to low and slowing stirring in the sour cream.
Add the filet back into the skillet (plus and juices that accumulated in the dish) and stir it in. Season the sauce with salt and pepper to taste.
Turn the heat off and gently stir in the cooked egg noodles. Let it sit for about 5 minutes then serve and enjoy!