Grilled Flank Steak with Chimichurri Sauce

A vibrant, herb‑packed steak that brings the spirit of Argentine barbecue to your backyard.

⭐⭐⭐⭐⭐ 4.9/5 (127 reviews) • 💬 45 comments

⏱️20Prep

🍳15Cook

⏰35Total

👥4Servings

📊MediumDifficulty

📸 Grilled Flank Steak with Chimichurri Sauce – Ready to devour!

My First Encounter with Chimichurri

I still remember the first time I tasted chimichurri on a sizzling piece of flank steak at a tiny Buenos Aires parrilla tucked away from the bustling streets. The bright green sauce, bursting with parsley, garlic, and a whisper of heat, transformed a simple cut of meat into a celebration of flavor. The aroma lingered in the air, mingling with the smoky char of the grill, and I knew I had discovered a culinary love affair that would travel with me across continents.

Chimichurri, rooted in Argentine tradition, has long been the faithful companion of grilled meats, especially the beloved asado. Its origins are a blend of Spanish, Italian, and indigenous influences, creating a sauce that is both rustic and refined. The fresh herbs cut through the richness of beef, while the vinegar adds a bright acidity that balances the smoky notes.

In this guide, you’ll learn how to select the perfect flank steak, how to craft a chimichurri that sings, and the precise grilling technique that yields a tender, juicy interior with a caramelized crust. I’ll walk you through each step, sharing the little secrets that make this recipe consistently spectacular.

So fire up your grill, gather the freshest herbs, and let’s create a dish that will become a staple at your dinner table and a story you’ll love to retell.

🌟 Why This Recipe Will Captivate You

From the first bite to the lingering aftertaste, this steak and chimichurri combo offers a harmony of texture, aroma, and flavor that makes every meal memorable.

✨ Bold, Fresh Flavor Profile: The herbaceous chimichurri delivers a burst of freshness that cuts through the richness of the beef, creating a balanced palate experience.
✨ Simple Ingredient List: Only pantry staples and fresh herbs are needed, making it accessible for both beginners and seasoned cooks.
✨ Quick & Efficient: With a total time of just 35 minutes, you can serve a restaurant‑quality dish on a weeknight.
✨ Versatile Pairings: Works beautifully with roasted vegetables, grilled corn, or a crisp salad, letting you adapt to any season.
✨ Health‑Conscious: Lean flank steak provides high protein, while the sauce is oil‑light and packed with antioxidants from parsley and cilantro.
✨ Crowd‑Pleaser: Its vibrant color and aromatic presence make it a show‑stopper at gatherings, impressing both meat‑lovers and herb enthusiasts alike.

🥗 The Ingredients

💡 Shopping Tip: Look for a flank steak with a deep red color and a fine grain. Fresh, flat‑leaf parsley and cilantro should have bright, crisp leaves without any yellowing. Choose extra‑virgin olive oil for the richest flavor.

🔍 Focus on Key Ingredients

Flank Steak

The flank steak is a long, flat cut that is relatively lean but richly flavored when cooked correctly. Look for a piece with a uniform thickness, about 1.5‑2 cm, to ensure even grilling. Trimming any silver skin before marinating helps the sauce penetrate and prevents toughness.

Fresh Parsley & Cilantro

Both herbs provide a bright, grassy backbone to the chimichurri. Parsley supplies a clean, slightly peppery note, while cilantro adds a citrusy nuance. Using the leaves (not stems) maximizes flavor and color intensity.

Red Wine Vinegar

The vinegar’s acidity lifts the raw herbs, creating a balanced sauce that doesn’t overwhelm the steak. It also helps tenderize the meat slightly during the brief marination.

🔄 Quick Substitutions

If you don’t have...	Use instead...
Fresh cilantro	Fresh basil or additional parsley
Red wine vinegar	Apple cider vinegar
Flank steak	Skirt steak or flat iron steak

👨‍🍳 Step‑by‑Step Instructions

Follow these detailed steps to achieve a perfectly grilled steak topped with a vibrant chimichurri that will wow every palate.

📋 Phase 1: Preparation & Mise en Place

Start by gathering and prepping all components before the grill heats up.

Trim and Pat Dry the Flank Steak

Place the flank steak on a clean cutting board. Using a sharp knife, carefully remove any silver skin or excess fat. Pat the meat dry with paper towels; a dry surface promotes a better sear and prevents steaming on the grill.

💡 Tip: If the steak is very thick, consider pounding it gently with a meat mallet to achieve an even thickness of about 1.5 cm.

Season the Steak

Drizzle the olive oil over both sides of the steak, then sprinkle the sea salt and freshly ground black pepper evenly. Let the steak rest at room temperature for 10 minutes; this ensures even cooking.

Prepare the Chimichurri

In a food processor, combine parsley, cilantro, minced garlic, red wine vinegar, red pepper flakes, and a pinch of sea salt. Pulse until the herbs are finely chopped but still retain some texture. With the processor running, slowly stream in the olive oil until the mixture emulsifies into a bright green sauce.

💡 Tip: For a smoother sauce, let the mixture sit for 5 minutes, then give it a quick stir before using.

The chimichurri sauce ready for the steak

🔥 Phase 2: Grilling & Cooking

Now the grill takes center stage. High heat will create a caramelized crust while keeping the interior juicy.

Preheat the Grill to High Heat

Light your charcoal grill or set a gas grill to its highest setting (about 260 °C / 500 °F). Allow the grill grates to become very hot, approximately 10 minutes, so they sizzle when the steak hits them.

⚠️ Attention: Ensure the grill is clean to prevent flare‑ups and unwanted bitterness.

Grill the Flank Steak

Place the steak on the hot grates at a 45° angle to the grill bars. Grill for 4‑5 minutes without moving it, then rotate 90° to create cross‑hatch marks and grill another 4‑5 minutes. Flip the steak and repeat on the opposite side for a total of 8‑10 minutes per side for medium‑rare (internal temperature 57 °C / 135 °F).

💡 Tip: Use an instant‑read thermometer for accuracy; the steak will continue to cook while resting.

Rest the Steak

Transfer the steak to a cutting board, tent loosely with foil, and let it rest for 8‑10 minutes. Resting allows juices to redistribute, resulting in a moist bite.

The steak rests, juices settle

✨ Phase 3: Finishing & Plating

Final touches that turn a great steak into a spectacular presentation.

Slice Against the Grain

Identify the grain (the direction of muscle fibers) and slice the steak thinly across it, about ½ cm thick. This technique maximizes tenderness.

Drizzle Chimichurri

Generously spoon the chimichurri over the sliced steak, allowing the sauce to pool in the crevices. The green specks of herbs add visual appeal and flavor bursts.

Add Garnish

Scatter fresh oregano leaves (if using) and arrange lemon wedges around the plate. A squeeze of lemon right before eating brightens the whole dish.

Serve Immediately

Present the steak on a warm platter, accompanied by grilled vegetables or a simple salad. Encourage guests to enjoy the steak while it’s still warm for optimal texture.

The final plated masterpiece

💡 Expert Tips & Tricks

🛒 Choosing the Right Ingredients

When shopping for flank steak, seek a piece with a deep mahogany hue and a fine, even grain. Avoid meat that looks gray or has a lot of surface fat, as it can render unevenly. For herbs, select parsley and cilantro that are vibrant and free of wilting. Fresh garlic should be firm, not sprouting.

🔪 Preparation Techniques

Patting the steak dry is crucial; moisture creates steam, which prevents a proper sear. Lightly scoring the surface (cross‑hatch) helps the sauce cling later. When chopping herbs, a food processor preserves the bright color better than a mortar and pestle, while still allowing you to control texture.

🌡️ Mastering the Cooking

High, direct heat creates those coveted grill marks and a caramelized crust. Keep the lid closed for the first half of cooking to trap heat, then open it to finish the sear. Use a probe thermometer to hit 57 °C for medium‑rare; remember the steak will rise about 3 °C while resting.

🍽️ Presentation & Service

Arrange the sliced steak in a fan shape on a wide platter; this showcases the pink interior and the green chimichurri. Sprinkle a few extra herb leaves on top for color contrast. Serve with a side of grilled corn and a crisp arugula salad dressed in lemon‑olive oil for a balanced plate.

🏆 Pro Tips

Elevate this dish from home‑cooked to restaurant‑level with these professional insights.

🎯 Pre‑Season the Steak Overnight: Lightly salt the flank steak and refrigerate uncovered for 12‑18 hours. This dry‑brine intensifies flavor and creates a drier surface for a superior sear.
🎯 Use a Two‑Zone Grill: Set one side of the grill to high heat for searing and the other to medium for finishing. After searing, move the steak to the cooler side to reach the desired internal temperature without burning the exterior.
🎯 Add Citrus Zest to Chimichurri: Grate a teaspoon of lemon zest into the sauce just before serving. The zest lifts the herbaceous notes and adds a subtle aromatic complexity.
🎯 Finish with a Touch of Butter: After the steak rests, melt a small knob of unsalted butter and drizzle it over the sliced meat. The butter adds a glossy finish and a silky mouthfeel.
🎯 Smoke the Herbs Lightly: Before blending, toast the parsley and cilantro briefly over the grill (about 30 seconds). This imparts a gentle smoky nuance that mirrors the charred steak.
🎯 Serve on a Warm Plate: Warm the serving plates in the oven at 60 °C for 5 minutes. A warm plate keeps the steak hot longer and prevents the chimichurri from cooling too quickly.

“A great steak is a canvas; a bold chimichurri is the masterpiece that completes it.” — Chef Gastón Acurio

🔄 Variations & Adaptations

The base recipe is flexible; feel free to experiment with flavors, dietary needs, or family preferences.

🥬 Vegetarian / Vegan Version

Replace the flank steak with thick‑cut portobello mushrooms or grilled cauliflower steaks. Marinate them in the same olive‑oil, salt, and pepper mixture, then grill using the same technique. The chimichurri remains unchanged, offering the same herbaceous punch.

Portobello mushrooms: 4 large caps, brushed with oil.
Cauliflower steaks: 1 large head, sliced into 2‑inch thick slabs.

🌶️ Flavor Variations

Explore different taste directions by tweaking the chimichurri base.

Spicy Version:

Add 1 finely chopped jalapeño and increase red pepper flakes to 1 tsp. Finish with a dash of smoked paprika for depth.

Mediterranean Version:

Swap cilantro for fresh mint, incorporate 2 tbsp capers, and finish with a squeeze of orange juice for a citrus‑herb profile.

Asian‑Inspired Version:

Replace red wine vinegar with rice vinegar, add 1 tbsp toasted sesame oil, and include 1 tsp grated ginger. Garnish with toasted sesame seeds.

⚠️ Dietary Adaptations

Gluten‑Free:

All ingredients are naturally gluten‑free; just ensure any pre‑made sauces or marinades used later are certified gluten‑free.

Lactose‑Free:

No dairy is present in the core recipe, making it automatically lactose‑free.

Low‑Calorie:

Trim the olive oil in the chimichurri to ¼ cup and use a leaner cut such as top sirloin. Serve with a side of steamed broccoli instead of starchy sides.

👶 Kid‑Friendly Version

Reduce the red pepper flakes or omit them entirely for a milder sauce. Slice the steak into bite‑size strips and serve with a side of sweet potato fries. Kids often love the bright green color of the sauce, making it a fun visual element.

📦 Storage & Reheating

🧊 Conservation

Refrigerator:

Duration: 3 days
Container: Airtight glass jar
Tip: Store the steak slices separate from the chimichurri to keep the sauce fresh.

Freezer:

Duration: 2 months
Method: Portion the steak into freezer‑safe bags, remove air, and freeze; keep chimichurri in a separate freezer‑safe container.
Defrost: Transfer to refrigerator overnight before reheating.

💡 For best texture, reheat only the steak; add fresh chimichurri after reheating.

♨️ Reheating

🔥 Oven (Recommended):

Preheat to 150 °C (300 °F).
Cover the steak loosely with foil to retain moisture.
Heat for 10‑12 minutes, or until warmed through.
Remove foil, add a splash of broth, and heat an additional 2 minutes for a gentle steam finish.

⚡ Microwave (Quick):

Place steak slices on a microwave‑safe plate, cover with a microwave‑safe lid.
Heat on medium power for 1 minute, stir, then heat another 30 seconds if needed.
Stir in a teaspoon of olive oil after heating to restore juiciness.

🍳 Skillet:

Heat a non‑stick skillet over medium heat, add a thin drizzle of oil, and warm the slices for 2‑3 minutes per side, pressing gently to re‑sear.

⚠️ Avoid reheating at high temperatures; the steak can become tough and dry.

🍷 Perfect Pairings

🥗 Side Dishes

Grilled Chimichurri Veggies: Zucchini, bell peppers, and red onions brushed with olive oil and tossed in leftover chimichurri.
Argentinian Potato Salad: Boiled potatoes with a light vinaigrette, chopped parsley, and hard‑boiled eggs.
Fresh Arugula Salad: Tossed with lemon juice, shaved Parmesan, and toasted pine nuts.

🍷 Wine & Beverage Pairings

Malbec: Its bold fruit and soft tannins complement the smoky steak and herb sauce.
Tempranillo: Offers a balanced acidity that mirrors the vinegar in the chimichurri.
Non‑Alcoholic: Sparkling water with a splash of grapefruit juice and a sprig of rosemary.

🍰 To Complete the Meal

Start with a light citrus salad, follow with the steak, and finish with a classic Argentine dulce de leche flan or a simple vanilla panna cotta topped with fresh berries. The sweet dessert balances the savory and herbaceous main course.

❓ Frequently Asked Questions

Q: Can I use a different cut of beef?

A: Absolutely. Skirt steak, flat‑iron steak, or even a well‑trimmed ribeye work well. Adjust cooking times slightly; thinner cuts need less time, while thicker cuts may require a lower heat finish to avoid overcooking.

Q: How do I prevent the chimichurri from turning brown?

A: The bright green color is preserved by using fresh herbs, adding the oil at the end of blending, and storing the sauce in an airtight container away from direct light. A squeeze of lemon juice just before serving also revitalizes the color.

Q: Is it okay to marinate the steak longer than 30 minutes?

A: Yes, a longer marination (up to 4 hours) deepens flavor, but avoid exceeding 12 hours as the acid can begin to “cook” the surface, resulting in a mushy texture.

Q: What’s the best way to slice flank steak?

A: Always slice against the grain. Identify the direction of the muscle fibers, then cut perpendicular to them. Thin slices (about ½ cm) ensure tenderness.

Q: Can I make the chimichurri ahead of time?

A: Yes. The sauce improves after resting for at least 30 minutes, allowing the flavors to meld. Store it in the refrigerator for up to 3 days; bring to room temperature before serving.

Q: How do I adapt the recipe for a large gathering?

A: Multiply the ingredient quantities proportionally. Use the portion adjuster on the recipe card to automatically recalculate amounts. For over 12 guests, consider grilling the steak in batches to maintain high heat.

🎉 To Your Kitchen!

This grilled flank steak with chimichurri sauce brings together the smoky allure of the grill with the fresh, zesty punch of herbs. By following the detailed steps, you’ll achieve a steak that’s juicy on the inside, perfectly charred on the outside, and crowned with a sauce that sings with every bite. The recipe’s flexibility lets you tailor it to dietary preferences, spice tolerance, or seasonal produce, ensuring it fits any occasion.

Give it a try tonight, share your photos, and let us know how you personalized it. Your feedback helps the community grow, and we love seeing creative twists on classic dishes.

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