One Hour Marinade Grilled Flank Steak


Tonight I am making one of my favorite flank steak recipes.  It is quick, easy, and, most importantly, delicious every time. I am certifiably addicted to flank steak and this marinade elevates it to another level.

One great quality of flank steak is the ability to absorb marinade flavors quickly, making it a great weeknight meal or a good option when little planning is needed. You can throw the steak in the marinade when you get off work and have the steak on the grill an hour later.

OK, let’s get down to business.

The first step is to mix up the marinade. This is an Asian inspired recipe that enhances the natural flavor of the flank steak with a sweet and salty tangy goodness.

For 1-2 pounds of flank steak, mix up the following in a bowl:

  • 2 Tablespoons Red Wine Vinegar
  • 1 Tablespoons Worcestershire Sauce
  • 1 Tablespoons Chinese Black Vinegar (found in the asian section of the supermarket… well worth the effort to find)
  • 2 Tablespoons Soy Sauce
  • 2 Tablespoons Brown Sugar
  • 2 Tablespoons Olive Oil ( or any vegetable oil)
  • 2 Tablespoons Water
  • 1 Teaspoon Fresh Ground Pepper

Place the steak in a Ziploc bag or any vessel you have that will allow the steak to submerge in the marinade. In this case I am using a little glass dish shaped like a pie. I have never made a pie with it, but it has marinaded about 100 steaks.


Flank steak taking a 1 Hour Bath in the Marinade

Let the steak marinade at room temperature for 30 min and then flip it one time to allow the marinade to work evenly. Pull the steak out of the marinade after about an hour. You can leave it in the marinade for up to 2 hours, but leave it in the fridge for the first hour. After taking it out of the marinade, grind some fresh pepper on each side. You want to see the pepper develop a nice texture on the meat. This will help develop a nice flavorful exterior crust when grilling at high heat.


Flank steak seasoned with additional fresh ground pepper before grilling.


This is the amount of pepper to aim for.

When you are marinating the steak, prepare the grill for high heat grilling.  You want temperatures in excess of 500 degrees F. The hotter the better. My gas grill is usually at 600 degrees when I prepare this.

When your steak is marinated and ready to go at room temperature, throw that sucker on the grill. For an average flank steak that is 3/4 inch thick, you are going to want to grill each side for 3-4 min over high heat. The goal is to cook the steak to medium or medium rare temperature. If you like your steak medium rare, go with 3 minutes a side. If you like your steak more done, go with 4 minutes a side or more.

Whatever you start with, use a good timer (iPhone) and keep a record of your cooking time and temperatures. If you do not get it quite right the first time, keep your grill temperature the same and adjust your cooking times for your next grill out.

on the grill

Always use a very hot grill for steak.

When you pull the steak off the grill you should have some nice grill marks and caramelization happening. If you do not, up the temp on your grill. This is what you are going for….


Let the steak rest for 5 minutes before carving and serving.


Perfect medium to medium rare flank steak.

Always wait 5 minutes before slicing 1/2 inch wide strips of beef.  Always cut against the grain when serving Flank Steak or Skirt Steak. Depending on how much salt you like, you may want a light sprinkle of salt before serving.  Enjoy!

One Hour Marinade Grilled Flank Steak

This tangy marinated flank steak is an easy meal that will impress anyone you cook for!

Course Dinner, Main Course
Cuisine American, BBQ
Prep Time 1 hour
Cook Time 15 minutes
Total Time 1 hour 15 minutes
Servings 2 -4


  • 2 lbs Flank Steak about 1/2 lb per person

Steak Marinade for 1-2 of Flank Steak

  • 2 Tablespoons Red Wine Vinegar
  • 1 Tablespoons Worcestershire Sauce
  • 1 Tablespoons Chinese Black Vinegar found in the asian section of the supermarket... well worth the effort to find
  • 2 Tablespoons Soy Sauce
  • 2 Tablespoons Brown Sugar
  • 2 Tablespoons Olive Oil or any vegetable oil
  • 2 Tablespoons Water
  • 1 Teaspoon Fresh Ground Pepper


  1. Grind fresh pepper on both sides of steak and rub into steak
  2. Place flank steak in marinade for 1 hour.  Flip after 30 minutes to ensure marinated evenly. 

  3. Grill over high heat for 3-4 minutes per side.  Remove from the grill when internal temperature is at 130 F for medium rare.  

  4. Let the steak rest for at least 5 minutes

  5. Slice the steak into 1/2" slices against the grain of the meat and serve!


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2 thoughts on “One Hour Marinade Grilled Flank Steak

  1. This is incredible. Very kid friendly.

  2. thanks matt. I will keep them coming. thanks for the feedback!

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Contact Keegan

Hi, my name is Keegan Lare. I love to create delicious grilled and smoked food, bursting with bold flavors. I also love to see my friends and family try something tasty and new. It is in this spirit that I created Seared & Smoked. Leave me a message and i’ll get back to you as soon as I can.