Marinated Flank Steak Recipe

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This is the flank steak recipe that makes you a BBQ hero—sweet, savory, and melt-in-your-mouth juicy. The easy marinade transforms an affordable cut into the star of any grill night, perfect for salads, tacos, or sandwiches. Simple, crowd-pleasing, and fuss-free, with leftovers that make the best steak sandwiches.

Sliced marinated flank steak served over mashed potatoes, garnished with fresh herbs, showcasing a juicy, tender steak perfect for grilling and family dinners.

Why You’ll Love This Marinated Flank Steak Recipe

Effortless But Epic

Five minutes to whisk together the marinade, a quick soak in the fridge, and you’re halfway to steak greatness.

Sweet, Savory, and So Tender

Brown sugar and soy sauce bring those crave-worthy flavors, while olive oil and vinegar work their magic for juicy results every time.

Flexible Cooking

Grill, pan-sear, broil, or bake—this recipe works however you like to cook.

Perfect for Entertaining (or Meal Prep)

Marinate ahead, grill when ready, slice and serve. Leftovers? They’re unreal in sandwiches or salads.

Ingredients for the Best Flank Steak Marinade

Low sodium soy sauce – The salty-sweet backbone.
Olive oil – For moisture and richness.
Brown sugar – Adds a subtle sweetness and caramelizes beautifully.
Apple cider vinegar – For brightness and tenderizing power.
Worcestershire sauce – Extra depth and umami.
Dijon mustard – Sharpness and a little tang.
Ground black pepper – For bite.
Fresh garlic – All the flavor.
Flank steak – The real MVP here (1.5 to 2 pounds is perfect).

For precise amounts, check the recipe card at the end of the post.

Tips for Perfect Marinated Flank Steak

Marinate for at least 2 hours, up to 24. Overnight is best for max flavor.
Reserve a couple spoonfuls of marinade before adding the beef. You’ll drizzle this on the cooked steak for an instant “sauce.”
Scrape off extra garlic before grilling. Prevents burning and bitterness.
Slice against the grain. This makes every bite extra tender—don’t skip!
Let the steak rest under foil after cooking. Keeps those juices where you want them: in the steak.

How to Make Marinated Flank Steak

Here’s your quick game plan for steak success:

1. Whisk the Marinade:
Mix soy sauce, olive oil, brown sugar, vinegar, Worcestershire, Dijon, and pepper in a big bowl or freezer bag. Reserve 2 tablespoons for later, then stir in the garlic.

2. Marinate:
Add the steak to the marinade, turning to coat. Cover and chill for at least 2 hours, or up to 24. The longer, the better.

Raw flank steak soaking in a marinade of soy sauce, garlic, and spices in a glass bowl, ready to be cooked for a flavorful and easy steak dinner.

3. Grill, Pan-Sear, Broil, or Bake:
Heat your grill (or grill pan) to medium-high. Cook steak about 5-6 minutes per side for medium, or until it hits 145°F inside (use a thermometer for best results).

Closeup of juicy marinated flank steak with bold grill marks, showing caramelized edges and a rich glaze, perfect for a summer barbecue or easy weeknight dinner.

4. Rest, Slice, Serve:
Let the steak rest under foil for 5-10 minutes. Then, slice thinly against the grain. Drizzle with your reserved marinade for the finishing touch.

Sliced marinated flank steak on a cutting board, topped with a drizzle of steak sauce, garnished with parsley for a crowd-pleasing barbecue dish.

Medium-rare marinated flank steak sliced on a plate, juicy and tender, ideal for family dinners or backyard cookouts.

Recipe Variations & Flavor Twists

Add Heat: A pinch of chili flakes or a splash of hot sauce amps up the spice.
Go Herbal: Chopped cilantro, parsley, or oregano work wonders in the marinade.
Citrus Brightness: Stir in a squeeze of lime, lemon, or orange juice.
Switch the Sweetener: Swap brown sugar for honey for a subtle twist.
Other Steaks: Use this marinade for skirt, sirloin, ribeye—whatever you’ve got.

Storage, Leftovers & Make-Ahead Tips

Store: Leftover steak keeps in an airtight container in the fridge for up to 4 days.
Use it up: Great for sandwiches, salads, wraps, or stir fry.
Meal prep: Slice and portion for easy lunches all week.
Freezer-friendly: Freeze uncooked steak in marinade, then thaw and cook when ready.

How to Serve Marinated Flank Steak

With mashed potatoes, roasted veggies, and a fresh green salad.
Sliced in tacos, wraps, or steak sandwiches.
Over rice or cauliflower rice for a low-carb plate.
Tossed in a salad with a citrusy vinaigrette.

Sliced marinated flank steak served over creamy mashed potatoes with broccoli, garnished with fresh herbs for a balanced, high-protein meal.

What to Avoid

Don’t over-marinate: 24 hours is the max—more can make the meat mushy.
Don’t skip the rest after cooking: This is the secret to juicy steak.
Don’t cut with the grain: Slicing across the grain is everything for tenderness.

FAQ

How do I slice flank steak to keep it tender?

Slice against the grain—look for the muscle lines and cut perpendicular. This keeps each bite juicy and tender, not chewy.

Can I marinate flank steak overnight?

Absolutely! Marinate for at least 2 hours, up to 24 hours for max flavor and tenderness.

What if I don’t have a grill?

No problem! Sear the steak in a hot skillet or grill pan, or broil it in your oven. You still get all the great flavor.

What are the best ways to use leftover marinated flank steak?

Try it in steak salads, tacos, sandwiches, or even a hearty breakfast hash. It’s super versatile—get creative!