Grilled flank steak is one of those reliable dishes that delivers bold flavor with very little effort. Cooked quickly over high heat and finished with a generous spoonful of chimichurri, it strikes a balance between rich and fresh. The steak is deeply savory, while the herb sauce brings brightness, acidity, and just a bit of heat. It’s a natural fit for warm-weather dinners, but just as welcome anytime you want something simple that still feels complete.

Why You’ll Love This Recipe

This is a straightforward recipe with strong results. Flank steak cooks quickly and takes on a great char from the grill, while chimichurri comes together in minutes from a handful of ingredients. The sauce does double duty, adding flavor during serving and bringing contrast to each bite. It’s also easy to scale, making it just as useful for a weeknight meal as it is for a casual gathering.

What Is Flank Steak?

Flank steak is a long, flat cut of beef that comes from the lower abdominal area. It’s lean, with a pronounced grain and a deep, beefy flavor. Because of its structure, it benefits from quick cooking over high heat rather than slow methods. The key to tenderness is slicing it thinly against the grain after resting, which shortens the muscle fibers and makes each bite easier to chew.

Ingredient Notes

The steak itself needs little more than salt and pepper, but choosing a well-marbled piece will improve both flavor and texture.

Chimichurri relies on fresh herbs, most commonly parsley with a smaller amount of oregano, to create its signature brightness. Garlic adds sharpness, while olive oil gives the sauce body. A splash of red wine vinegar or lemon juice brings acidity that cuts through the richness of the meat. Red pepper flakes are optional but add a subtle heat that rounds everything out.

Tips for Grilling Flank Steak

Let the steak sit at room temperature for about 20 to 30 minutes before grilling so it cooks more evenly. Preheat the grill thoroughly so you get a good sear right away. Flank steak is best cooked to medium-rare or medium, which keeps it tender without drying it out.

Once off the grill, let the steak rest before slicing so the juices redistribute. When you’re ready to cut, slice thinly against the grain. This step makes a noticeable difference in texture and is worth paying attention to.

Serving Suggestions

Arrange the sliced steak on a platter and spoon chimichurri generously over the top, letting some pool around the edges. Serve with grilled vegetables, a simple green salad, or roasted potatoes. Crusty bread works well for soaking up any extra sauce. Leftovers can be tucked into sandwiches, wraps, or grain bowls for easy meals later on.

Variations

You can adjust the chimichurri to suit your taste or what you have on hand. Add cilantro or a bit of fresh mint for a different herb profile, or swap lemon juice for red wine vinegar for a brighter finish. A pinch of smoked paprika adds depth without overpowering the freshness.

This same approach works well with other proteins too, including grilled chicken or shrimp, making the sauce a useful addition to your regular rotation.

Storage & Make-Ahead

Chimichurri can be made ahead and stored in the refrigerator for up to three days. Let it sit at room temperature before serving so the oil loosens and the flavors come forward.

Leftover steak can be refrigerated for up to three days. Slice it before storing for easy use in salads, sandwiches, or bowls. It can be served cold or gently warmed.

Recipe: Grilled Flank Steak with Chimichurri

Makes 4 to 6 servings

Ingredients

For the steak:

• 1½ to 2 pounds flank steak
• Salt and freshly ground black pepper
• 1 tablespoon olive oil, optional

For the chimichurri:

• 1 cup fresh parsley, finely chopped
• 2 tablespoons fresh oregano, finely chopped, or 2 teaspoons dried oregano
• 3 cloves garlic, minced
• ½ cup olive oil
• 2 tablespoons red wine vinegar or lemon juice
• ½ teaspoon red pepper flakes, optional
• Salt and freshly ground black pepper to taste

Instructions

1. Preheat a grill to medium-high heat. Clean and lightly oil the grates.
2. Pat the flank steak dry with paper towels. Season both sides generously with salt and pepper, and lightly brush with olive oil if using.
3. Place the steak on the hot grill and cook for 4 to 6 minutes per side, depending on thickness, until it reaches your desired doneness. For medium-rare, the internal temperature should be about 130 to 135°F.
4. Transfer the steak to a cutting board and let it rest for 5 to 10 minutes.
5. While the steak rests, make the chimichurri. In a bowl, combine the parsley, oregano, and garlic. Add the olive oil and vinegar or lemon juice, then stir to combine. Season with salt, pepper, and red pepper flakes if using. Taste and adjust as needed.
6. Slice the steak thinly against the grain.
7. Arrange the sliced steak on a serving platter and spoon chimichurri over the top. Serve with additional sauce on the side.

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This is the kind of recipe that proves simple techniques can go a long way. With a good piece of steak, a hot grill, and a fresh herb sauce, you end up with a dish that feels balanced, adaptable, and easy to return to whenever you need something reliable.