Ingredients
Method
- Cook sliced beef in a skillet until browned.
- Add butter, onion, mushrooms, and garlic and cook until soft.
- Sprinkle flour over the mixture and stir well.
- Add broth, Worcestershire sauce, and mustard and cook until thickened.
- Stir in sour cream and serve over noodles.
Notes
- Slice beef thinly for the most tender texture.
- Do not boil after adding sour cream.
- Store leftovers in the refrigerator for up to 3 days.
- Add broth if the sauce thickens too much.
