Steak Diane

Directions

1. 1
   Season the steaks on both sides with salt and pepper.
2. 2
   Heat oil in a large skillet on medium-high.
3. 3
   Reduce heat to medium, and cook steaks for about 3 to 5 minutes per side for medium done.
4. 4
   Transfer to plate to let steaks rest, tent with aluminum foil.
5. 5
   Add mushrooms to the pan and cook, stirring until golden brown and releasing their juices, about 4 minutes.
6. 6
   Add brandy and cook until evaporated.
7. 7
   Add beef stock, bring to a boil until reduced in half.
8. 8
   Combine butter and flour to form a paste.
9. 9
   Whisk mustard into the pan of mushrooms and whisk in the flour paste a little bit at a time.
10. 10
    Cook until thickened, about 2 minutes.
11. 11
    Reduce heat, return the steak to the pan along with any juices.
12. 12
    Coat in mushroom sauce.
13. 13
    Serve topped with chopped chives.