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Asian Flat Iron Steak

Rated as 4.55 out of 5 Stars

"Tender flat iron steak meets trendy Asian bistro flavor! With a side of Asian vegetable mix, it's an easy delicious dinner!"
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3 h 30 m servings 538
Original recipe yields 4 servings


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  1. Whisk soy sauce, vinegar, brown sugar, green onions, garlic, and mustard powder together in a bowl; pour into a resealable plastic bag. Add the steak, coat with the marinade, squeeze out excess air, and seal the bag. Marinate in the refrigerator, 3 to 4 hours.
  2. Remove steak from marinade and discard remaining marinade.
  3. Heat a non-stick skillet over medium-high heat; cook steak just until outside is browned and seared, about 1 minute per side. Continue to cook until desired doneness is reached, about 5 minutes more per side. An instant-read thermometer inserted into the center should read 140 degrees F (60 degrees C). Remove skillet from heat and allow steak to rest before cutting, 3 to 5 minutes. Sprinkle sesame seeds over steak.


  • Cook's Note:
  • The nutrition data for this recipe includes the full amount of the marinade ingredients. The actual amount of the marinade consumed will vary.

Nutrition Facts

Per Serving: 538 calories; 29.2 18.9 50 155 1214 Full nutrition

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Read all reviews 8
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Turned out bland. I don't think I let it marinade long enough or didn't use enough ingredients (I'm thinking double the ingredients.) Will definitely try again. Was good, cooked perfectly.

Excellent! I can’t wait to make it again. And very easy, too.

Delicious!!! I made it exactly as the recipe calls for except for the green onions, because I forgot to pick some up when I was shopping. I will definitely make it again, next time with the gree...

This didn’t have as much oomph as I had hoped for. I’m not sure if it needed some ginger or a longer marinating time.

Loved this recipe I'll be making it again real soon

Tasty! A little tough if not marinated long nuff but tasty recipe even for us not so much meat lovers. Thanks for the recipe!

Turned out amazing. I recommend after a few min of cooking slice steak into strips and let cool for another 1-2 min

This was delicious. I didn't quite have enough mustard and I forgot to buy green onions, so I added a pinch of onion powder and a pinch of ginger. Otherwise I made it just like the recipe. Reall...