Zwiebelrostbraten
Zwiebelrostbraten is the Viennese classic of pan-seared beef sirloin under a thick sauce of slow-cooked onions and red wine. It is a standard dish in Vienna's Beisl and café kitchens.
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Ingredients
- 4 steaks beef top sirloin steaks, patted dry
- 2 tsp kosher salt
- 1 tsp ground black pepper
- 2 tbsp vegetable oil
- 2 large yellow onions, thinly sliced
- 1/4 cup unsalted butter
- 2 tbsp all-purpose flour
- 1/2 cup dry red wine
- 1 cup beef broth
- 1/2 tsp dried marjoram
Instructions
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1
Season 4 steaks patted dry beef top sirloin steaks on both sides with 2 tsp kosher salt and 1 tsp ground black pepper. Let them stand at room temperature for 20 minutes.
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2
Heat 2 tbsp vegetable oil in a large skillet over high heat until shimmering. Sear the beef top sirloin steaks 3 to 4 minutes per side, until well browned. Transfer to a plate.
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3
Lower the heat to medium and add 1/4 cup unsalted butter. Cook 2 large thinly sliced yellow onions 12 to 15 minutes, stirring often, until deep golden and soft.
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4
Stir in 2 tbsp all-purpose flour and cook 1 minute. Pour in 1/2 cup dry red wine and scrape up the browned bits. Simmer 2 minutes.
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5
Add 1 cup beef broth and 1/2 tsp dried marjoram and simmer 5 minutes, until the sauce coats a spoon.
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6
Return the beef top sirloin steaks to the pan and spoon the onions over them. Check the thickest steak with an instant-read thermometer: 135°F is medium-rare and 145°F is medium. Cook a minute or two more if needed.
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7
Serve each steak topped with plenty of the onion sauce.
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