For a richer sauce, consider adding a tablespoon of Dijon mustard along with the beef stock. Ensure your skillet is screaming hot before searing the steak to develop a beautiful crust. Let the steak rest for 5-10 minutes after cooking, before slicing, to allow the juices to redistribute for a more tender result.
Flat Iron Steak with Mushroom Sauce
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PREP TIME20 mins
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COOK TIME35 mins
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TOTAL TIME55 mins
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SERVING4 People
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VIEWS106
Indulge in the rich umami depths of this Flat Iron Steak, crowned with a luscious, creamy mushroom sauce. An affordable cut of beef, elevated to gourmet status, perfect for a weeknight treat or a special occasion.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate7 g
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Cholesterol126 mg
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Fiber2 g
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Protein28 g
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Saturated Fat14 g
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Sodium870 mg
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Sugar1 g
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Fat31 g
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Unsaturated Fat0 g
Follow The Directions
01
StepPreheat the oven to 325 degrees F (165 degrees C).
02
StepSeason both sides of the flat iron steak with salt, black pepper, garlic powder, and onion powder. Heat a heavy, oven-proof skillet over medium-high heat; add 2 teaspoons of vegetable oil and heat until shimmering. Add steak; sear until well-browned, about 3 minutes per side. Transfer steak to a plate.
03
StepReduce heat to medium; add the remaining 1 teaspoon of vegetable oil to the skillet. Add mushrooms; cook and stir until wilted and browned, about 10 minutes. Reduce heat to medium-low; add Burgundy wine to the skillet and bring to a boil. Cook until the wine is slightly reduced, 3 to 5 minutes; add beef stock and bring to a simmer.
04
StepIn a small bowl, mash butter and flour into a paste using a fork; stir into the mushroom mixture and simmer until the sauce is thickened, about 5 minutes. Return the flat iron steak to the skillet.
05
StepCook in the preheated oven until the steak is barely pink inside, about 10 minutes. Cut the steak into thin slices on the diagonal against the grain; place on a platter.
06
StepStir cream into mushroom sauce until heated through, 1 to 2 minutes; pour over steak and garnish with chives.
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Delaney Murray
Jun 9, 2025The instructions were easy to follow, and the tips were very helpful. I'll definitely be making this again.
Selmer Nader
Apr 11, 2025Be careful not to overcook the steak in the oven. I used a meat thermometer and it came out perfect.
Jazmyn Romaguera
Mar 31, 2025This is a great way to make a relatively inexpensive cut of meat feel special.
Kade Zemlak
Feb 2, 2025I added a little bit of truffle oil to the mushroom sauce and it was amazing!
Robbie Champlin
Dec 6, 2024This recipe was fantastic! The mushroom sauce was so creamy and flavorful, and the steak was perfectly cooked.
Emile Koch
Nov 26, 2024My family loved this! Even my picky eaters enjoyed the steak and the sauce.
Georgette Stiedemannferry
Aug 27, 2024The Burgundy wine really made a difference in the flavor of the sauce. I highly recommend using it if you can.
Bella Durgan
May 7, 2024I made this for a dinner party and everyone raved about it. It's definitely a restaurant-quality dish.