Serves 4 (or servings for 2 in parenthesis)
1 (1/2) pound filet mignon or mignon tips (cut into 2 inches long and 1/4 inch wide)
3 ( 1 1/2) tablespoons butter
1 ( 1/2) sweet onion, finely chopped
1/2 ( 1/4) cup beef broth
1 (1/2) tablespoons Dijon mustard
1/4 ( 2 T) cup heavy cream
1/2 ( 1/4) cup sour cream
2 ( 1 ) teaspoons flour
2 (1) tablespoons minced fresh dill
2 (1) tablespoons minced parsley
Salt and freshly grounded black pepper
Heat a large non-stick skillet over high heat and sear meat on all sides, for about a minute. Work in small batches so the meat does not give off any liquid. Remove to a plate.
Add the butter and onions and saute until tender.
Blend broth, flour, mustard, heavy cream, and sour cream together. Lower heat, add the liquid mixture, and simmer, without boiling until sauce thickens about 5 minutes.
Return meat to the sauce and heat, without boiling until meat is warmed through. Season to taste with salt and pepper; stir in dill and parsley.
Beef Stroganoff is traditionally served with noodles. Rice is also used and low carbers can make cauliflower rice as an option.