Grilled Flank Steak with Chimichurri: Easy Holiday Dinner

There was a specific Christmas Eve three years ago when I almost ordered pizza. It’s true. The house was freezing, the kids were running wild, and I was staring at a raw flank steak like it was a puzzle I didn’t know how to solve. I didn’t want to spend hours marinating something complicated. I didn’t want to babysit a slow cooker. I just wanted something that tasted incredible, looked impressive enough for my in-laws, but didn’t require a culinary degree to make.

So I threw together a quick chimichurri and slapped that steak on the grill. What happened next changed my holiday game plan forever.

The steak came out tender, juicy, and packed with flavor. The chimichurri? It was bright, herby, and completely stole the show. My mother-in-law, who usually critiques everything from the curtains to the coffee, asked for the recipe. That’s when I knew I had found the holy grail of holiday dinners. It’s simple, it’s forgiving, and honestly? It’s the only main course I trust when I need dinner to just work.

If you’re looking for a centerpiece that feels fancy but is actually hard to mess up, this grilled flank steak with chimichurri is it. It’s become my go-to for everything from casual weeknight dinners to big family gatherings. And once you make it, I bet it becomes yours too.

Why You’ll Love This Recipe

I’ve tried every holiday roast and fancy beef dish out there, but this grilled flank steak with chimichurri keeps coming back to the top of my list. Here’s why it’s my absolute favorite:

It’s Beginner-Proof — Seriously, if you can chop parsley and mix it with oil, you can make this. There are no complex techniques, no temperature guessing games, and no fancy equipment required. I’ve made this for friends who have never held a knife, and they turned out perfect. You really can’t mess this up.

Flavor That Does the Heavy Lifting — The chimichurri is the secret weapon. It’s not just a sauce; it’s a flavor bomb of garlic, oregano, and vinegar that cuts through the richness of the beef. It’s bright and fresh, which is exactly what a heavy holiday meal needs to keep things from feeling too heavy.

Fast and Forgiving — Flank steak cooks quickly. You’re looking at about 15-20 minutes of active grilling time. If you overcook it slightly, the chimichurri saves it. If you undercook it a bit, you can just let it rest longer. It’s incredibly forgiving compared to a delicate fish or a tricky soufflé.

Make-Ahead Magic — The best part? You can make the chimichurri days in advance. In fact, it tastes better after sitting in the fridge for a day or two. This means your only job on the big day is to fire up the grill and throw the steak on. No last-minute panic.

This is my “if you can only make one thing” dinner. It’s confident, it’s delicious, and it leaves you with more time to actually enjoy your guests instead of staring at the stove.

Ingredients You’ll Need

Here’s the beauty of this grilled flank steak with chimichurri: the ingredient list is short, simple, and mostly things you might already have in your pantry or fridge. I’m not asking you to run to three different specialty stores.

For the Chimichurri

Fresh parsley (2 cups, packed) — This is the base. Don’t use dried parsley; it won’t have that fresh, grassy punch. Flat-leaf parsley is best because it’s easier to chop. I buy a huge bunch because I use it for other things, like my grilled cilantro lime chicken thighs, so it’s worth keeping stocked.

Fresh cilantro (½ cup, packed) — I like a little cilantro mixed in for extra brightness. If you’re one of those people who thinks cilantro tastes like soap, skip it and just use more parsley. You won’t miss it.

Fresh oregano (2 tablespoons) — Again, fresh is non-negotiable here. It adds that earthy, slightly peppery note that defines traditional chimichurri. If you only have dried, use 1 tablespoon, but fresh is so much better.

Garlic (4-5 cloves) — Yes, that many. Chimichurri is garlicky, and that’s a good thing. Use fresh cloves. Minced them finely or pulse them in a food processor. I’ve tried using jarred garlic for this once, and the metallic taste really threw off the whole sauce. Don’t do it.

Red wine vinegar (½ cup) — This provides the tang. It cuts through the oil and the beef. I use a decent quality red wine vinegar, not the super cheap stuff. It makes a noticeable difference in the sharpness.

Extra virgin olive oil (½ cup) — This carries the flavors. Use your best olive oil here because you’ll taste it. It should be fluid and grassy, not thick or bitter.

Red pepper flakes (1 teaspoon) — For a little heat. Adjust this based on your spice tolerance. I like a bit of kick, but start with half a teaspoon if you’re sensitive.

Salt and black pepper — To taste. I usually use about 1 teaspoon of kosher salt and ½ teaspoon of black pepper for the sauce.

For the Steak

Flank steak (1.5 to 2 pounds) — Look for a flank steak that’s about 1 inch thick. It should be a deep red color and feel firm to the touch. Avoid ones that are super thin or have lots of hard fat on the edges. I usually grab this at the local butcher, but the grocery store works fine.

Coarse sea salt — For seasoning the steak. I like kosher salt or sea salt because the flakes stick better and distribute evenly. Avoid fine table salt; it’s too easy to over-salt.

Black pepper — Freshly cracked is best. I use a pepper mill because pre-ground pepper just doesn’t have the same aroma.

Garlic powder (optional) — I skip this for the steak itself because the chimichurri has so much fresh garlic. But if you want a little extra savory depth, a light dusting works.

Equipment Needed

You don’t need fancy gadgets for this. Here’s what I actually use to keep things simple and foolproof.

Grill — An outdoor charcoal or gas grill is ideal for that smoky flavor. I prefer charcoal for holidays because it feels more festive. But if you don’t have outdoor space, a grill pan on your stovetop works surprisingly well. I’ve made this in the apartment with a one-pan lemon butter garlic cod using a similar stovetop method, and it’s totally doable.

Sharp Knife — For chopping the herbs and slicing the steak. A dull knife is dangerous and makes a mess. Keep your chef’s knife sharp.

Food Processor or Mortar and Pestle — A food processor makes the chimichurri in 30 seconds. Just pulse the herbs, garlic, and vinegar until finely chopped, then drizzle in the oil. If you prefer a chunkier, more traditional texture, use a mortar and pestle. It takes more effort but tastes amazing.

Measuring Cups and Spoons — Standard stuff. I use glass measuring cups for the oil and vinegar.

Cutting Board — Keep one for raw meat and one for herbs to avoid cross-contamination. I use a plastic board for the steak because it’s easier to sanitize.

Serving Platter — A large platter looks great for holidays. I like a rustic wooden board or a big white ceramic platter to contrast with the green sauce and red meat.

How to Make It: Step-by-Step

Alright, let’s make this! I’m walking you through exactly how I do it, including the little tricks that make it so easy. Remember, you really can’t mess this up.

Step 1: Make the Chimichurri (10 minutes)

Start with the sauce. If you’re using a food processor, add the parsley, cilantro, oregano, garlic, red pepper flakes, salt, and pepper. Pulse until the herbs are finely chopped. It shouldn’t be a puree; you still want to see little bits of green. Then, with the motor running, slowly drizzle in the olive oil and red wine vinegar. Blend for another 10 seconds until combined.

If you’re using a mortar and pestle, chop the herbs and garlic finely with your knife, then mash them with salt and pepper. Add the vinegar, then slowly whisk in the oil. Transfer to a bowl.

Pro Tip: Let the chimichurri sit at room temperature for at least 30 minutes before serving. This lets the flavors meld. I usually make it the night before, so it’s ready to go.

Step 2: Prep the Steak (5 minutes)

Take your flank steak out of the fridge and let it sit on the counter for 20-30 minutes while you heat the grill. This brings it to room temperature, which helps it cook evenly. Pat it dry with paper towels—this is crucial for a good sear.

Season both sides generously with salt and pepper. Don’t be shy with the salt; the steak needs it. I usually use about 1 teaspoon of salt per side for a 1.5-pound steak.

Step 3: Heat the Grill (10 minutes)

Get your grill hot. For charcoal, pile the coals and let them burn until they’re covered in white ash. For gas, turn all burners to high and close the lid for 10 minutes. You want high, direct heat for searing.

Pro Tip: Clean the grill grates thoroughly before heating. I use a grill brush to scrape off any leftover bits. This prevents sticking and keeps the steak from tearing.

Step 4: Grill the Steak (12-15 minutes)

Place the steak on the hot grill. Close the lid and cook for 4-5 minutes on the first side. You want a good char, so don’t move it around. After 4 minutes, lift it to check for grill marks. If it releases easily, it’s ready to flip.

Flip the steak and cook for another 4-5 minutes on the second side. For medium-rare, aim for an internal temperature of 130-135°F. For medium, 140-145°F. Flank steak is best served medium-rare to medium; anything beyond that and it gets tough.

Pro Tip: Use a meat thermometer. It’s the only way to be sure. I learned this the hard way after guessing and ending up with a shoe leather steak. Now I never guess.

Step 5: Rest the Steak (10 minutes)

Once the steak hits the right temperature, remove it from the grill and place it on a cutting board. Tent it loosely with foil and let it rest for at least 10 minutes. This is non-negotiable. Resting allows the juices to redistribute throughout the meat. If you cut it immediately, all those juicy flavors will spill out onto the board, leaving you with dry steak.

Step 6: Slice and Serve

After resting, slice the steak against the grain. This means you’re cutting perpendicular to the direction of the muscle fibers. You’ll see lines running along the steak; cut across them. This shortens the fibers and makes each bite tender.

Arrange the slices on a platter and spoon the chimichurri generously over the top. Serve immediately.

Expert Tips & Tricks

Here’s everything I’ve learned from making this grilled flank steak with chimichurri dozens of times. These tips will save you from my mistakes.

Slice Against the Grain — This is the #1 tip for flank steak. If you slice with the grain, you’ll be chewing forever. Look for the lines of muscle fiber and cut across them. It makes a huge difference in tenderness.

Don’t Skip the Rest — I know it’s tempting to cut into it the second it comes off the grill. But wait 10 minutes. Your patience will be rewarded with juicier, more flavorful meat.

Make the Sauce Ahead — Chimichurri tastes better after sitting. The vinegar mellows, and the herbs infuse the oil. Make it 1-2 days in advance and store it in an airtight container in the fridge. Bring it to room temperature before serving.

High Heat is Key — Flank steak needs high heat to sear quickly. If your grill isn’t hot enough, the steak will steam instead of sear, and you won’t get those nice grill marks. Get it screaming hot before the steak hits the grates.

Use a Thermometer — Guessing temperature is risky. A digital instant-read thermometer takes 5 seconds and guarantees perfect doneness every time.

Don’t Overcrowd the Grill — If you’re cooking for a crowd, cook the steak in batches. Overcrowding lowers the grill temperature and leads to uneven cooking.

Adjust the Heat — Chimichurri can be spicy. If you’re serving kids or people sensitive to heat, reduce the red pepper flakes or remove the seeds before adding them to the sauce.

Variations & Substitutions

Once you’ve nailed the basic version, here’s how you can mix it up. I’ve tried all of these, and they’re all winners.

Grilled Chicken Version — Swap the flank steak for chicken thighs or breasts. The chimichurri pairs beautifully with chicken. I use this same sauce for my grilled cilantro lime chicken thighs, and it’s a favorite. Just adjust cooking time based on the chicken thickness.

Vegan Option — Skip the steak and serve the chimichurri over grilled portobello mushrooms or tofu. The sauce is naturally vegan, so it works perfectly as a topping for plant-based proteins.

Spicy Chimichurri — Add a diced jalapeño or serrano pepper to the food processor. Or add more red pepper flakes. If you like heat, this is the way to go.

Lemon Chimichurri — Swap half the red wine vinegar for fresh lemon juice. It adds a citrusy brightness that’s great for summer grilling.

Herb Variations — While parsley and cilantro are traditional, you can experiment. Try adding fresh mint or basil for a different flavor profile. It’s not traditional, but it’s delicious.

Gluten-Free — This recipe is naturally gluten-free. Just make sure your red wine vinegar and olive oil are certified gluten-free if you’re highly sensitive. Most are, but it’s good to check labels.

Serving & Storage

So, how do you serve this grilled flank steak with chimichurri for the best holiday experience?

How to Serve

I usually slice the steak and arrange it on a large platter, then ladle the chimichurri over the top. It looks beautiful and rustic. For sides, I like simple roasted potatoes or a fresh green salad. I also love serving it with grilled bacon wrapped corn for a sweet and smoky contrast that complements the beef perfectly.

Side Dishes:

• Roasted garlic mashed potatoes
• Simple arugula salad with lemon vinaigrette
• Grilled asparagus
• Crispy roasted potatoes

Storage Instructions

Refrigerator: Store leftover steak and chimichurri separately in airtight containers for up to 3 days. The steak will get firmer in the fridge, but it’s still good cold or reheated gently.

Reheating: Reheat the steak gently in a skillet over low heat with a splash of broth or water. Don’t microwave it, or it will get tough. The chimichurri can be eaten cold or brought to room temperature.

Freezing: I don’t recommend freezing the steak, as it can become dry and tough upon thawing. The chimichurri freezes well for up to 3 months. Thaw in the fridge overnight and stir before serving.

Nutrition Information

I’m not a nutritionist, but here’s the breakdown if you’re tracking. Keep in mind that these are estimates based on standard ingredients.

Per Serving (based on 4 servings, with ¼ cup chimichurri):

• Calories: 350
• Protein: 30g
• Carbs: 4g
• Fiber: 1g
• Fat: 22g
• Saturated Fat: 7g
• Cholesterol: 80mg
• Sodium: 400mg

What’s Good: High in protein, low in carbs, and packed with healthy fats from the olive oil. The herbs add antioxidants and vitamins.

What to Know: The sodium comes from the salt in the chimichurri and the steak seasoning. You can reduce this by using less salt. The fat content is moderate, mostly from the olive oil and the beef.

My Take: This is a hearty, satisfying meal. It’s not a light salad, but it’s nutrient-dense and flavorful. When I serve it, I usually pair it with plenty of vegetables to balance the meal.

Final Thoughts

So that’s my go-to grilled flank steak with chimichurri! I’ve probably talked your ear off at this point, but when you find a recipe that works this well, you want to share it.

This has saved holiday dinners more times than I can count. It’s my answer to “what’s for dinner” when I want something special but don’t want to stress. The chimichurri is the star—it’s fresh, vibrant, and completely transforms the simple beef into something restaurant-quality. And the best part? It’s so easy that you’ll actually enjoy making it.

Make it yours! Try different herbs, adjust the spice level, or pair it with your favorite sides. The best recipes are the ones you adapt to your family’s tastes. And remember, if you can only make one thing this holiday, make this. You really can’t mess it up.

If you make this, drop a comment and let me know what you think! I love hearing how recipes turn out in your kitchen. And if something doesn’t work, tell me that too—I’m here to help troubleshoot.

Happy cooking! And I hope your kitchen smells half as good as mine does right now.

Frequently Asked Questions

Can I make the chimichurri ahead of time?

Yes! In fact, it tastes better if you make it 1-2 days in advance. The flavors meld and deepen in the fridge. Store it in an airtight container. Bring it to room temperature before serving for the best flavor.

How do I know when the flank steak is done?

Use a meat thermometer. For medium-rare, aim for 130-135°F. For medium, 140-145°F. Flank steak is best served medium-rare to medium. If you don’t have a thermometer, press the steak; it should feel firm but with a little give. Cut into one piece to check the color if you’re unsure.

Can I use a grill pan instead of an outdoor grill?

Absolutely. A cast-iron grill pan works great. Heat it until it’s smoking hot before adding the steak. You’ll get nice grill marks and a good sear. Just be prepared for some smoke, so use your stove fan.

Why is my flank steak tough?

Two reasons: either it was overcooked or you didn’t slice it against the grain. Flank steak is a lean cut with long muscle fibers. If you cook it past medium, it becomes tough. And if you slice with the grain, the fibers remain long and chewy. Always slice across the fibers for maximum tenderness.

Can I substitute the red wine vinegar?

You can use white wine vinegar or apple cider vinegar instead. Red wine vinegar is traditional and adds a nice depth, but white wine vinegar is lighter and apple cider vinegar is slightly sweeter. All work well; it’s just a matter of taste preference.

What sides go well with chimichurri steak?

Simple sides work best. Roasted potatoes, grilled vegetables, a fresh green salad, or even just crusty bread to soak up the sauce. I also love serving it with grilled bacon wrapped corn for a sweet and smoky side that complements the beef perfectly.

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