Mouthwatering Balsamic Flank Steak

By Emily Cookson | July 8, 2025 | No comments

Balsamic Flank Steak

I’ve crafted a delightful Balsamic Flank Steak recipe that’s as simple to prepare as it is flavorful, featuring succulent beef, zesty balsamic vinegar, and aromatic herbs, making it a standout at any meal. 

My journey with Balsamic Flank Steak began on a balmy summer evening while hosting a family barbecue. In an attempt to bring something unique to the table, I experimented with a marinade marrying balsamic vinegar and fresh herbs. The outcome was nothing short of spectacular, and since then, it has become a family staple. This recipe shines due to its simplicity and the gourmet touch it brings to the table without straining your budget. 

What makes this dish truly special is its versatility and the way it transforms a typical weeknight dinner into something extraordinary. By using a few readily available ingredients, you can whip up a dish that’s not only healthy but also rich in flavor. Whether you’re pressed for time or hosting guests, this recipe will consistently impress, reflecting the perfect balance of tangy and savory notes sure to tantalize your taste buds. 

Why You’ll Love Balsamic Flank Steak?

In crafting this Balsamic Flank Steak, I’ve drawn from trusted cooking techniques to ensure that you achieve the perfect balance of tenderness and flavor every time you prepare it. Here’s why it works so well: 

  • Simplicity: The recipe requires minimal ingredients and steps, making it accessible for cooks of all skill levels.
  • Rich Flavor: The blend of balsamic vinegar and herbs infuses the steak, creating a bold, memorable taste.
  • Versatility: Perfect for any occasion, this dish can be the highlight of a fancy dinner or a casual family meal.
  • Consistency: Proven methods ensure that the steak is juicy and flavorful with every preparation.

The secret to its success is the marinade. Allowing the steak to soak in the richness of balsamic and herbs creates a symphony of flavors.

With this recipe, you’re not just preparing a meal; you’re crafting an experience that celebrates simple yet sophisticated flavors, guaranteed to impress and satisfy every palate. 

Balsamic Flank Steak (3)

Ingredients Notes

  • Flank Steak: I love how flank steak offers rich beefy flavor. Look for one with marbling for juiciness when cooked.
  • Dijon Mustard: It adds a subtle tangy heat. Opt for a high-quality brand for a robust taste.
  • Garlic: Fresh minced garlic infuses deep, aromatic notes. Always choose firm, unblemished cloves.
  • Onion Powder: It provides a mild sweetness. I prefer a finely ground version for even distribution.
  • Soy Sauce/Coconut Aminos: Enhances umami. Use aminos for a soy-free option; ensure they’re naturally brewed.
  • Olive Oil: It’s crucial for tenderizing and moisture. Extra-virgin has the best depth and complexity.
  • Balsamic Vinegar: Rich, sweet acidity elevates the dish. Aged balsamic provides a more intense flavor.
  • Salt and Black Pepper: Season generously to enhance other flavors. I recommend freshly ground pepper for full aroma.
  • Zucchini: Grilled zucchini adds a delightful, fresh contrast. Choose glossy, firm zucchinis for the best texture.
  • Whipped Feta: Creamy and tangy, it complements the steak. Use feta in brine for a smoother whip.
  • Heavy Cream/Milk: Helps achieve a velvety texture in whipped feta. I prefer cream for richer consistency.

How to Make Balsamic Flank Steak?

Balsamic Flank Steak (4)
  • Marinate the Steak: Begin by preparing your marinade. In a large bowl, whisk together 2 teaspoons of Dijon mustard, 4 cloves of minced garlic, 2 teaspoons of onion powder, 3 tablespoons of soy sauce or coconut aminos, 3 tablespoons of olive oil, and 1/2 cup balsamic vinegar. Season with salt and freshly ground black pepper to taste. Place your 1.5 lb flank steak in a shallow dish and cover it with the marinade. Ensure the meat is completely coated by flipping it over a few times. Cover and refrigerate for at least 2 hours, or preferably overnight, to allow the flavors to deeply penetrate the meat. 
  • Prepare the Zucchini: While the steak marinates, prepare the zucchini. Trim the ends of 3 large zucchinis, then slice them lengthwise into thick pieces. Toss the slices with 2-3 tablespoons of olive oil and sprinkle with kosher salt. The light sheen of oil and salt will enhance the grilling process, adding flavor and moisture. 
  • Grill the Steak and Zucchini: Preheat your grill to medium-high heat. Once heated, remove the steak from the marinade and place it on the grill. Cook for about 5-7 minutes on each side, depending on your desired doneness. As you cook, notice the beautiful sear marks develop, filling the air with rich, savory aromas. Transfer to a cutting board and let it rest for 5 minutes before slicing. Next, grill the zucchini slices for approximately 2-3 minutes on each side until they are tender and possess a slight char. 
  •  Make the Whipped Feta (Optional) : For a creamy accompaniment, blend 8 ounces of feta cheese in a food processor with 3 tablespoons of heavy cream or milk until smooth. The result will be a luscious, tangy spread to complement your steak. 
  • Serve Slice the steak against the grain for maximum tenderness, serve alongside the grilled zucchini, and optionally, a spoonful of whipped feta for a delightful finish. 

Expert Cooking Tips

  • Marinate the steak for at least 4 hours for deeper flavor absorption; overnight is even better.
  • Use a meat thermometer to achieve perfect doneness; aim for 125°F for medium-rare.
  • Grill zucchini separately to prevent overcrowding and ensure even cooking.
  • If pressed for time, score the steak lightly before marinating to speed up flavor infusion.
  • Allow the steak to rest covered for 5 minutes post-grilling; this redistributes the juices for juicier slices.
  • I find using a cast iron skillet offers excellent sear marks and intensified flavors.

Storage Tips

  • Store steak and zucchini separately in airtight containers in the fridge for up to 3 days.
  • For freezing, tightly wrap steak portions with plastic wrap before placing them in a freezer bag to avoid freezer burn.
  • Reheat steak in a pan over low heat to retain moisture; add broth if needed.
  • Zucchini reheats best in the oven to avoid sogginess; use a baking sheet and preheat at 350°F for 5-7 minutes.
  • Always thaw frozen steak in the refrigerator overnight for safe and even defrosting.
  • Store whipped feta separately in the fridge, covered, for up to 5 days; stir well before serving.

Variations and Substitutions

  • For a dairy-free option, replace whipped feta with avocado crema or cashew cream.
  • Opt for tamari instead of soy sauce for a gluten-free marinade.
  • Add a splash of orange juice to the marinade for a fruity, tangy twist.
  • Swap rosemary for basil or thyme for a different herbal accent.
  • For a spicier kick, include a pinch of red pepper flakes in the marinade.
  • Use turkey or chicken breast for a leaner protein alternative.
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What to Serve with Balsamic Flank Steak?

  • Grilled Asparagus: The smoky flavor complements the steak’s richness, while its crispness adds a delightful texture contrast.
  • Roasted Sweet Potatoes: Their natural sweetness enhances the balsamic’s tangy notes, offering a satisfying, hearty accompaniment.
  • Quinoa Salad: Light and refreshing, it balances the savory steak with its nutty flavor and adds a pleasant, wholesome texture.
  • Arugula and Cherry Tomato Salad: Peppery arugula and juicy tomatoes bring brightness, enhancing the steak’s robust flavor profile.
  • Garlic Mashed Potatoes: Creamy and comforting, they provide a classic, soothing base for the steak’s bold marinade.
  • Sauteed Mushrooms: Earthy mushrooms amplify the umami of the steak, creating a rich, savory harmony.
  • Couscous with Herbs: Light and fluffy, it pairs well with the steak, absorbing flavors while adding a delicate, herby freshness.
  • Steamed Broccoli with Lemon: Bright lemon cuts through the steak’s richness, while broccoli adds a nutritional boost with a touch of crunch.
  • Parmesan Garlic Green Beans: The cheese adds umami, enhancing the savory aspect while the beans offer a crunchy texture.

FAQs

How can I prevent a soggy marinade?

Pat the steak dry before marinating. This ensures the steak absorbs the marinade flavors efficiently.

Can I use a different cut of beef?

Yes, try skirt steak for similar texture. Adjust cooking time for desired tenderness.

How do I ensure the steak stays juicy?

Rest the steak for five minutes post-cooking to redistribute juices evenly.

What if I don’t have balsamic vinegar?

Use red wine vinegar and a pinch of sugar as a substitute for similar tang and sweetness.

How to adjust flavor if it’s too tangy?

Add a bit of honey or brown sugar to balance the tanginess with a touch of sweetness.

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Mouthwatering Balsamic Flank Steak

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Craving a juicy steak? Discover how to grill balsamic flank steak to perfection with our flavorful recipe. Elevate your BBQ game with this mouthwatering dish.

  • Author: Emily Cookson
  • Prep Time: 15 minutes
  • Cook Time: 10 minutes
  • Total Time: 25 minutes
  • Yield: 4-6 servings
  • Category: Main Course
  • Method: Grilling
  • Cuisine: American
  • Diet: Gluten Free

Ingredients

Main Ingredients:

  • Flank Steak – 1.5 lb
  • Dijon Mustard – 2 teaspoons
  • Garlic – 4 cloves, minced
  • Onion Powder – 2 teaspoons
  • Soy Sauce or Coconut Aminos – 3 tablespoons
  • Olive Oil – 3 tablespoons
  • Balsamic Vinegar – 1/2 cup, plus more as needed
  • Salt and Black Pepper – to taste

Optional: Zucchini and Whipped Feta

  • Zucchini – 3 large, ends trimmed and sliced thick lengthwise
  • Olive Oil – 2-3 tablespoons
  • Kosher Salt – to taste
  • Feta Cheese – 8 ounces in brine
  • Heavy Cream or Milk – 3 tablespoons

Instructions

  • Marinate the steak: Begin by preparing your marinade. In a large bowl, whisk together 2 teaspoons of Dijon mustard, 4 cloves of minced garlic, 2 teaspoons of onion powder, 3 tablespoons of soy sauce or coconut aminos, 3 tablespoons of olive oil, and 1/2 cup balsamic vinegar. Season with salt and freshly ground black pepper to taste. Place your 1.5 lb flank steak in a shallow dish and cover it with the marinade. Ensure the meat is completely coated by flipping it over a few times. Cover and refrigerate for at least 2 hours, or preferably overnight, to allow the flavors to deeply penetrate the meat.
  • Prepare the zucchini: While the steak marinates, prepare the zucchini. Trim the ends of 3 large zucchinis, then slice them lengthwise into thick pieces. Toss the slices with 2-3 tablespoons of olive oil and sprinkle with kosher salt. The light sheen of oil and salt will enhance the grilling process, adding flavor and moisture.
  • Grill the steak and zucchini: Preheat your grill to medium-high heat. Once heated, remove the steak from the marinade and place it on the grill. Cook for about 5-7 minutes on each side, depending on your desired doneness. As you cook, notice the beautiful sear marks develop, filling the air with rich, savory aromas. Transfer to a cutting board and let it rest for 5 minutes before slicing. Next, grill the zucchini slices for approximately 2-3 minutes on each side until they are tender and possess a slight char.
  • Make the whipped feta (optional): For a creamy accompaniment, blend 8 ounces of feta cheese in a food processor with 3 tablespoons of heavy cream or milk until smooth. The result will be a luscious, tangy spread to complement your steak.
  • Serve: Slice the steak against the grain for maximum tenderness, serve alongside the grilled zucchini, and optionally, a spoonful of whipped feta for a delightful finish.

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About the author

Holly Nilsson is the creator of Spend With Pennies, where she creates easy, comforting recipes made for real life. With a passion for nostalgic flavors and simplified techniques, Holly helps busy home cooks create delicious meals that always work. She is also the author of “Everyday Comfort,” which promises to inspire even more hearty, home-cooked meals.

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