Grilled Flank Steak with Cilantro-Lime Marinade

There is something undeniably magical about the moment a beautifully marinated cut of beef hits a hot grill. The sizzle, the aroma of garlic and citrus catching the flames—it is the ultimate soundtrack to outdoor cooking. If you are looking to elevate your weekend cookouts, this tender, charred flank steak bursting with zesty citrus and fresh herbs is going to be your new go-to.

Flank steak is a fantastic, beefy cut, but it leans on the leaner side and can be tough if not treated right. That is where our cilantro-lime mixture comes in. It acts as both a flavor bomb and a tenderizer, making this an easy grilled flank steak recipe that even beginner cooks can master. The acid from the lime breaks down the muscle fibers just enough to yield a melt-in-your-mouth bite every single time.

Whether you are hosting a family dinner, trying to impress guests, or just gathering summer BBQ ideas, this is a foolproof way to serve up restaurant-quality meat right from your backyard. Let’s fire up the grill!

Key Recipe Info

• Difficulty: Easy
• Total Time: 2 hours 20 minutes
• Active Time: 20 minutes
• Yield: 4–6 servings

Why You’ll Love This Recipe

• The Best Steak Marinade: The balance of bright lime, earthy cumin, and fresh cilantro creates a vibrant flavor profile that cuts through the richness of the beef.
• Quick Cooking Time: Once it hits the grates, this steak takes less than 15 minutes to cook.
• Incredibly Versatile: Serve it alongside roasted potatoes, slice it thin for epic street tacos, or lay it over a bed of greens for a protein-packed salad.
• Fail-Proof Technique: Follow our simple temperature and slicing rules, and you will never serve chewy steak again.

Required Equipment

• Outdoor Grill (Gas or Charcoal) or a heavy cast-iron grill pan for indoors
• Large zip-top freezer bag or a shallow glass baking dish
• Food processor or blender (for the marinade)
• Instant-read meat thermometer
• Long grilling tongs
• Heavy wooden cutting board and a sharp carving knife

Ingredients

For the Steak

• 1.5 to 2 lbs Flank Steak: Look for a piece with an even thickness so it cooks at the same rate. (Alternative: Skirt steak or flat iron steak work beautifully here too).

For the Cilantro-Lime Marinade

• 1 packed cup Fresh Cilantro: Leaves and tender stems included (the stems pack a ton of flavor!).
• 1/3 cup Olive Oil: Extra-virgin is great, but avocado oil works perfectly for high-heat grilling.
• 1/4 cup Fresh Lime Juice: About 2–3 juicy limes. (Do not use bottled lime juice; fresh is mandatory here).
• 1 tbsp Lime Zest: Zest the limes before you juice them!
• 4 cloves Garlic: Peeled and roughly chopped.
• 1 medium Jalapeño: Seeded and roughly chopped. (Leave the seeds in if you want a spicy kick).
• 1 tsp Ground Cumin: Adds that warm, earthy backbone.
• 1 tsp Kosher Salt: Plus extra for finishing.
• 1/2 tsp Coarse Black Pepper

Step-by-Step Instructions

Step 1: Prepare the Marinade

1. Combine the cilantro, olive oil, fresh lime juice, lime zest, garlic, jalapeño, cumin, kosher salt, and black pepper in a food processor or blender.
2. Pulse the mixture until it forms a bright green, slightly chunky puree.

Step 2: Marinate the Steak

3. Place the flank steak into a large, heavy-duty zip-top bag or a shallow glass dish.
4. Pour the marinade directly over the meat, ensuring every inch is generously coated.
5. Seal the bag (pressing out excess air) or cover the dish tightly with plastic wrap.
6. Refrigerate for at least 2 hours, but no longer than 8 hours.

Step 3: Grill to Perfection

7. Remove the steak from the refrigerator about 30 minutes before grilling to let it take the chill off.
8. Preheat your grill to medium-high heat (around 400°F to 450°F). Ensure your grates are clean and lightly oiled.
9. Remove the meat from the bag and gently shake off the excess marinade. (Too much oil dripping into the grill will cause nasty flare-ups).
10. Grill the steak for 5 to 7 minutes per side. You are looking for a beautiful, dark char on the outside.

Step 4: Rest and Slice

11. Check the temperature using an instant-read thermometer. Pull the steak off the grill when it reaches 130°F to 135°F for a perfect medium-rare.
12. Transfer to a cutting board and loosely tent with aluminum foil. Let it rest for a full 10 minutes. This allows the juices to redistribute back into the meat fibers.
13. Slice the steak thinly, strictly against the grain, holding your knife at a slight 45-degree angle.

Chef’s Tips for Success

• Identify the Grain: Flank steak has very obvious muscle fibers running in one direction down the length of the meat. You must slice perpendicular (across) those lines. Slicing with the grain will result in tough, chewy meat.
• Don’t Over-Marinate: Lime juice is highly acidic. If you leave the steak in the marinade for more than 8-10 hours, the acid will start to “cook” the meat (like ceviche) and turn the texture mushy.
• Wipe Before Grilling: Don’t wipe the steak completely clean, but do let the excess liquid drip off before it hits the grates. This ensures the meat sears rather than steams.

Variations & Adaptations

• Make it a Bowl: Slice the finished steak and serve it over cilantro-lime rice, black beans, grilled corn, and a dollop of sour cream for an incredible burrito bowl.
• Swap the Citrus: If you don’t have limes, a mix of orange juice and a splash of white vinegar offers a slightly sweeter, Cuban-inspired Mojo flavor profile.
• Oven-Broiled: No grill? No problem. Place the marinated steak on a foil-lined baking sheet under your oven’s broiler for 6-8 minutes per side, keeping a close eye on it so it doesn’t burn.

Serving & Storage

Serving: Fan the thin slices out on a large wooden serving platter. Squeeze a fresh lime wedge over the top and sprinkle with a pinch of flaky sea salt right before serving. Storage: Store leftover steak in an airtight container in the refrigerator for up to 3 days. It is fantastic eaten cold the next day in sandwiches or over salads!

FAQ

How do I know which way the grain runs?

Look closely at the surface of the raw or cooked flank steak. You will see long, distinct lines running parallel to each other across the meat. When slicing, position your knife so it crosses over those lines like a “T”, rather than running alongside them.

Can I freeze the steak in the marinade?

Yes! This is a great meal-prep hack. Place the raw steak and the marinade in a freezer-safe bag and freeze immediately. As it thaws overnight in the fridge, it will marinate simultaneously.

How do I learn how to grill flank steak if I only have an indoor stove?

Use a heavy cast-iron skillet or grill pan. Heat it over medium-high until it is smoking hot. Turn on your exhaust fan, add a tiny drizzle of high-heat oil, and cook for about 5-6 minutes per side.

Why is my flank steak tough even after marinating?

Tough steak is usually the result of two common mistakes: overcooking or slicing incorrectly. Flank steak is a very lean cut, so cooking it past medium (140°F) dries it out quickly. Additionally, if you forget to slice strictly against the grain, the long muscle fibers remain intact, making every bite hard to chew.

What internal temperature should flank steak be cooked to?

For the best texture and juiciness, we highly recommend aiming for medium-rare (130°F–135°F) or medium (135°F–140°F). We do not recommend cooking flank steak past medium, as it becomes quite tough and dry. Remember to pull the meat off the grill about 5 degrees before your target temperature, as it will continue to cook while it rests.

Can I use this cilantro-lime marinade on chicken or pork?

Absolutely! This bright, zesty mixture is incredibly versatile. It works wonders on boneless, skinless chicken thighs, chicken breasts, and even pork chops. Because poultry and pork break down differently than beef, simply reduce the marinating time to 1 to 2 hours.

What side dishes go well with grilled flank steak?

Because of the vibrant, Mexican-inspired flavor profile, this steak pairs perfectly with cilantro-lime rice, seasoned black beans, grilled street corn (elote), or a fresh avocado and tomato salad. It is also the perfect centerpiece for a family-style taco or fajita night!

There you have it—a beautifully charred, flavor-packed steak that requires minimal effort but delivers maximum impact. Try this easy grilled flank steak recipe at your next weekend cookout and let us know how it turned out! Snap a photo, share it online, and tag Brickhouse Grille so we can see your grilling triumphs.