Steak Diane Mushroom Sauce (Printable Version)

Tender beef steaks pan-seared and topped with a creamy, brandy-flavored mushroom sauce for a special meal.

# What You Need:

→ For the Steaks

01 - 4 beef tenderloin steaks (about 6 oz each, 1-inch thick)
02 - 1/2 tsp salt
03 - 1/2 tsp freshly ground black pepper
04 - 1 tbsp olive oil
05 - 1 tbsp unsalted butter

→ For the Diane Mushroom Sauce

06 - 2 tbsp unsalted butter
07 - 8 oz cremini or white mushrooms, thinly sliced
08 - 2 shallots, finely minced
09 - 2 garlic cloves, minced
10 - 1 tsp Worcestershire sauce
11 - 2 tsp Dijon mustard
12 - 1/4 cup brandy or cognac
13 - 1/2 cup beef broth
14 - 1/3 cup heavy cream
15 - 2 tbsp fresh parsley, finely chopped
16 - Salt and freshly ground black pepper, to taste

# How-To:

01 - Pat steaks completely dry with paper towels. Season both sides generously with salt and freshly ground black pepper, pressing the seasoning into the meat.
02 - Heat olive oil and 1 tablespoon butter in a large skillet over medium-high heat until butter foams and pan is hot but not smoking.
03 - Add steaks to the hot skillet and sear for 2–3 minutes per side for medium-rare doneness, or adjust time to reach preferred internal temperature. Transfer steaks to a warm plate and tent loosely with foil to rest.
04 - Reduce heat to medium. Add remaining 2 tablespoons butter to the same skillet. Add sliced mushrooms and sauté for 3–4 minutes until golden brown and edges are crispy.
05 - Add minced shallots and garlic to the mushrooms. Cook for 1–2 minutes until fragrant and shallots are translucent, stirring frequently to prevent burning.
06 - Stir in Worcestershire sauce and Dijon mustard, mixing well to combine with the mushroom mixture and distribute evenly.
07 - Carefully pour in brandy or cognac. For dramatic presentation, flambé by carefully igniting the liquid (stand back and use extreme caution), or simply let it simmer for 1 minute to reduce alcohol content.
08 - Pour in beef broth and simmer for 2 minutes, allowing the liquid to reduce slightly and intensify in flavor while scraping up any browned bits from the pan bottom.
09 - Stir in heavy cream and cook for 2–3 minutes until the sauce thickens enough to coat the back of a spoon, stirring constantly to prevent scorching.
10 - Taste the sauce and adjust seasoning with additional salt and freshly ground black pepper as needed to achieve balanced flavor.
11 - Return steaks and any accumulated juices to the pan. Spoon the mushroom sauce generously over the steaks and simmer gently for 1 minute to warm through. Sprinkle with fresh parsley and serve immediately.

# Expert Tips:

01 -
  • The sauce transforms an ordinary steak dinner into something that feels like a celebration
  • Everything happens in one pan, so you get maximum flavor with minimal cleanup
02 -
  • Room temperature steaks sear more evenly and cook more predictably than cold ones
  • The brandy must reduce before adding cream, or the sauce will never thicken properly
03 -
  • Wipe out your skillet between steps if the butter solids get too dark
  • Warm your plates in a low oven so the sauce stays silky longer