Raised in the Kitchen cookbook giveaway graphic

Raised in the Kitchen is available now!

Healthy Habits That Help Me!

Grilled Flank Steak- My Favorite Balsamic Marinade

33 Reviews
There’s nothing quite like a perfect grilled steak and so I’m sharing my secrets on Grilled Flank Steak and my favorite balsamic marinade. 
a cutting board with roasted yukon gold potatoes and sliced grilled flank steak with a delicious marinade

We went over to one of our friends’ home the other night for dinner. We brought the meat and salad and they supplied side and dessert (oh my gosh it was the most delicious strawberry shortcake. A true favorite of mine!)

I got this recipe from a girl I went to Elementary and Junior High School with. Fast forward 5,000 years, we became friends on facebook and the rest is history! 

Anyway, this is hands down our new favorite way to cook flank steak. If there is one meat recipe you try from me this weekend, make it this one. You will love it forever.

a sliced flank steak that has been cooked on a gas grill with a balsamic soy sauce marinade

What Is Flank Steak

Flank steak is a lean, somewhat tough cut of beef that is long and flat. It is still quite flavorful but it mostly benefits from a marinade that tenderizes the meat. 

Prepared this way, marinated, cooked quickly at high heat, and thinly sliced, flank steak practically melts in your mouth.

What’s in the Marinade?

  • Soy Sauce– This adds a lot of flavor and a touch of salt to balance out the sweetness in the marinade.
  • Oil (Vegetable is what we use, but you could use olive oil)
  • Dark Brown Sugar– Dark brown sugar gives a touch of sweet and balances the salty of the soy sauce, but we prefer dark brown sugar to add a little more depth of flavor.
  • Worcestershire Sauce– Umami is the flavor you forget about. Yes, there’s sweet, salty, bitter, sour but did you know umami is that earthy goodness? Worcestershire enhances that in a beef marinade.
  • Dijon Mustard– A strong but not bitter mustard that helps to enhance flavor.
  • Garlic– Garlic breaks up the muddled flavors in a beef dish, adding a stitch of a bite.
  • Chives- A more mild onion flavor that also adds a little freshness.
  • Pepper- While we don’t need to add salt thanks to the soy sauce we do need a little heat from the pepper.
  • Balsamic Vinegar- Acid is one of the key components in cooking as you’ll read in our cookbook, Raised in the Kitchen. It cuts through the flavors, tenderizes the meat and adds a sweet but tangy flavor.

What to Use if You Can’t Find Flank Steak

A great substitution for flank steak is a skirt steak or flat iron steak. We loooove skirt steak!!

roasted yukon gold potatoes with a grilled flank steak sliced thinly

What Is Another Name For Flank Steak?

 Some butchers sell flank steak under the name “London Broil,” while others use that term for cuts from the round.

How to Keep Flank Steak  Tender

Flank steak has a lot of fibers running through it, and it is a fairly lean cut of meat. It has an intense beefy flavor, but it can be a little tough.

  • It should be thinly sliced and cut against the grain. Look for which way the lines are running through the meat and cut the opposite direction. This will give it maximum tenderness.
  • Marinades can also help it to be tender. 
  • Let it rest! Once it has cooked, remove it from the grill and set it aside to rest for about 5 minutes. This allows juices to redistribute and the meat will be more flavorful and tender. 

thinly sliced flank steak that marinated in a balsamic marinade all day

How Should Flank Steak be Cooked

  • Grilling is the best way to cook flank steak, as it caramelizes the flavor on the outside, adding a nice sear but you can still control the inner temperature.
  • To keep your flank steak grill time to a minimum. Start with a high heat to sear both sides then turn it down to medium and only cook for about 9-12 minutes total.
  • Because this is a lean cut, it is best cooked rare, medium-rare, or medium. I would never cook a flank steak to well done. 

[Additionally, you can also pan-sear it in a skillet or broil it in your oven, but you will lack flavor. ]


Raised in the Kitchen - Carrian Cheney

Our new book is now available!

This unique cookbook guides the way through every step, including meal lists and easy-to-follow recipes, and features dollops of heartwarming family stories.

Buy now

a sliced flank steak that has been cooked on a gas grill with a balsamic soy sauce marinade

Flank Steak

4.16 from 33 votes
Prep Time: 8 hours 10 minutes
Cook Time: 15 minutes
Total Time: 8 hours 25 minutes
Servings: 4
A delicious marinade that brings the often tough flank steak to a mouthwateringly tender cut of steak.


  • 2 lbs flank steak
  • 1/2 cup soy sauce
  • 1/3 cup vegetable oil
  • 2 tablespoons dark brown sugar
  • 1/4 cup Worcestershire sauce
  • 1 teaspoon dijon mustard
  • 4 cloves garlic medium, minced
  • 2 tablespoons chives minced, fresh
  • 1 1/2 teaspoons ground pepper
  • 2 teaspoons balsamic vinegar


  • Mix all ingredients together in a ziploc or a large dish.
  • Add the flank steak and marinate (covered) in the fridge overnight or at least all day.
  • Heat the gas grill to high heat. Remove the steak from the marinade and lay on the grill for 2 minutes per side. Then turn down to medium and cook another 7-10 minutes, flipping halfway again, or until an internal temperature of 130 for medium rare, or longer for medium etc. Remove and set aside to rest on a cutting board with foil draped over the top.
  • Meanwhile, place 1/2 of the remaining marinade in a sauce pan over medium heat.
  • Bring the marinade to a simmer for 10 minutes, set aside.
  • Slice the steak against the grain and serve with a drizzle of additional sauce if desired.


Flank steak is a lower quality of meat so cooking to well done will make it more chewy. It's incredibly flavorful and delicious when cooked properly!!
store left overs for 3-4 days in the refrigerator
Nutrition Facts
Flank Steak
Amount Per Serving (1 g)
Calories 374 Calories from Fat 99
% Daily Value*
Fat 11g17%
Saturated Fat 5g31%
Polyunsaturated Fat 1g
Monounsaturated Fat 5g
Cholesterol 136mg45%
Sodium 1980mg86%
Potassium 1011mg29%
Carbohydrates 13g4%
Fiber 1g4%
Sugar 8g9%
Protein 52g104%
Vitamin A 84IU2%
Vitamin C 4mg5%
Calcium 88mg9%
Iron 5mg28%
* Percent Daily Values are based on a 2000 calorie diet.

this steak hash is one of our favorites for a quick 5ingredient dinner! #getsmart ohsweetbasil_edited-1

Steak Hash

marinated carne asada tacos ohsweetbasil.com

Carne Asada Tacos

Carne asada enchiladas with the best avocado crema enchilada sauce ever. EV-ER. ohsweetbasil.com_

Avocado Steak Enchiladas

a cutting board with roasted yukon gold potatoes and sliced grilled flank steak with a delicious marinade


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

Oh, Sweet Basil on Instagram

Want more of our family, recipes, and all our shenanigans?

Check us out on Instagram and be sure to tag us @ohsweetbasil #ohsweetbasil for a chance to be featured!

Healthy Habits That Help Me!

About the authors

carrian feik cheney oh sweet basil

Cade and Carrian have three children and love to spend time together whether it’s vacationing or snuggled up on the couch for a good movie.

And this family especially loves to eat.

They love everything from the keep you fit and healthy to the get out your sweat pants indulgent and everything in between.

But most of all, they love the memories made, shared and treasured and it’s all thanks to a meal shared together with loved ones.

Leave a comment

Recipe Rating


  • Loved this recipe! The marinade made the meat very tender and flavorful. So yummy!

    • Reply
    • Yay! Love to hear this! Thank you so much Lindsey!!

      • Reply
  • Made this last night & WOW, we could not stop eating! I am never going to use any other marinade!

    • Reply
    • Thank you so much! So glad you enjoyed it!

      • Reply
  • Have you been hiding in my kitchen??? 🙂 We are flank steak lovers over here. It’s an inexpensive cut and when marinated right, is sooooo delicious!! Mmmm your photo is making me drool.

    • Reply
    • Why yes I have! LOL, seriously so good right?

      • Reply
  • The steak looks delicious and not that hard to prepare.

    • Reply
  • Ugly food needs love too. I have a few recipes that are soooo ugly but delicious!

    • Reply
  • And there I go drooling again! Way to go! I even woke up with the …okay, we won't go there. But you know what I'm sayin'. Looks scrumptious!

    • Reply
  • This looks simple and yummy. My boys love their meat. 😉
    Please stop by my blog, Simply Healthy Family to enter to win a set of curtains {made from 100% recycled material} in honor of Earth Day.
    Happy Day!

    • Reply
  • Looks amazing to me, what a nice meal.

    • Reply
  • Honey, you had me at “steak” and “brown sugar”. I'm all over it!

    • Reply
  • I LOVE flank steak! So tender and delish. The picture is making me want a big ol bite : )

    • Reply

Healthy Habits That Help Me!