FLANK STEAK WITH MUSTARDY ONIONS AND ROSEMARY RECIPE BY TASTY

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Flank Steak With Mustardy Onions And Rosemary Recipe by Tasty image

Quick-cooking flank steak gets an umami upgrade with an easy pan sauce of sautéed onion, garlic, rosemary, and Dijon mustard.

Provided by Tikeyah Whittle

Categories     Dinner

Time 35m

Yield 4 servings

Number Of Ingredients 10

1 ¾ lb flank steak
kosher salt, to taste
freshly ground black pepper, to taste
1 tablespoon olive oil
1 small yellow onion, thinly sliced lengthwise
1 clove garlic
1 small sprig fresh rosemary, minced, plus more for garnish
2 tablespoons dijon mustard
½ cup water
potato, or paste, for serving, cooked

Steps:

  • Season the steak on both sides with salt and pepper.
  • Heat the olive oil in a large cast iron skillet over medium-high heat. Add the steak and cook, undisturbed, until browned on the bottom, 5-6 minutes. Flip and cook on the other side for 4 minutes for medium-rare doneness, or until cooked to your liking. Transfer the steak to a plate.
  • Return the skillet to medium heat and add the onion, garlic, and rosemary. Cook, stirring to scrape up any browned bits from the bottom of the pan, until the onion is soft and caramelized, about 6 minutes. Stir in the mustard and water, bring to a simmer, and cook until the sauce thickens, 3-4 minutes. Remove the skillet from the heat and season with salt and pepper.
  • Thinly slice the steak. Spoon the mustard-onion sauce over the meat and garnish with more rosemary leaves. Serve with potatoes or pasta alongside.
  • Enjoy!

Nutrition Facts : Calories 276 calories, Carbohydrate 6 grams, Fat 12 grams, Fiber 1 gram, Protein 32 grams, Sugar 2 grams

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