2 pounds filet mignon (rib eye or New York steak), well chilled and cut into thin strips
3 tablespoons butter
1 cup finely chopped onion
1/2 pound sliced mushrooms
2 tablespoons flour
1 can beef broth
1 cup heavy whipping cream
1/2 cup sour cream
1 tablespoon dijon mustard
2 tablespoons dried dill weed (this makes the difference)
2 tablespoons parsley, dried or fresh
Salt and fresh ground pepper, to taste
Recipe
In a heavy skillet, quickly sear the meat (with a little oil) about 3 minutes.
Remove from skillet and set aside.
In another skillet, melt butter and add onions. Saute for about 5 minutes. Add mushrooms and saute until lightly browned (adding more butter if needed).
Turn down heat and sprinkle in flour and stir about 1 minute. Then stir in broth, cream, sour cream, mustard, dill and any meat juices drained from meat.
Simmer over low heat about 5 minutes. DO NOT BOIL.
Add meat back to pan and stir to coat. Add parsley, salt and pepper.