Grilled Flank Steak with Chimichurri: Easy Budget-Family Labor Day Meal

My husband has a specific look he gives me when he sees me pulling a grill out in late August. It’s part exhaustion, part hope, and mostly just the silent question: “Are we really doing this?” Because let’s be honest, by Labor Day, most of us are running on fumes. The summer break is over, the kids are back in school, the house is a mess, and the idea of standing over a hot grill for an hour feels less like relaxation and more like a chore.

But then I make this grilled flank steak with chimichurri, and the look changes. The shoulders drop. The sigh of relief is audible. Because this meal is the perfect intersection of “fancy enough for a holiday” and “so easy I can still supervise the kids from five feet away.”

I’ve been making this combination for about five years now, ever since I realized that flank steak is basically the budget hero of the meat world. It’s affordable, it cooks fast, and that chimichurri sauce? It’s basically a party in a jar that turns a simple weeknight dinner into a Labor Day feast. We’re talking vibrant, herby, garlicky goodness that takes five minutes to whip up while the steak rests. No fancy techniques. No expensive ingredients you’ll only use once. Just good, honest food that feeds a family without breaking the bank.

This is my go-to Labor Day main dish. It’s practical, it’s flavorful, and it’s the kind of meal that makes everyone ask for seconds before the plates are even cleared. If you’re dreading the holiday cookout stress, trust me—this is the one you want.

Why You’ll Love This Recipe

There are a million reasons to make this, but I’m going to keep it real with the ones that actually matter to a busy parent:

The Sauce is a Game-Changer — Chimichurri is raw, fresh, and incredibly vibrant. It cuts through the richness of the steak perfectly. And the best part? You can make the sauce a day ahead. I often mix it up on Sunday so it’s ready to grab when I need it. It actually tastes better after the flavors have had time to meld.

Flank Steak is Budget-Friendly — Compared to ribeye or filet mignon, flank steak is a steal. It’s usually under $10 a pound (often less on sale), and one pound stretches to feed 4-6 people easily. It’s the smartest way to serve red meat without the premium price tag.

Cooks in Under 30 Minutes — Flank steak is thin. It doesn’t need a slow cook. You sear it hard and fast, let it rest, and you’re done. Total active time is about 15 minutes. That’s less time than it takes to order and wait for takeout.

Kid-Approved (Mostly) — My kids aren’t huge herb fans, but they love the char on the steak and the tangy sauce. If your picky eaters are sensitive to parsley, you can swap it for more cilantro or just serve the sauce on the side. It’s flexible.

Perfect for Meal Prep — Leftover flank steak is incredible sliced thin over salads or tucked into sandwiches. I usually make extra specifically for lunch the next day. It’s a win-win for dinner and lunch.

Ingredients You’ll Need

Here’s the thing about this recipe: the ingredients list is short, but the quality matters. You don’t need a fancy butcher shop, but you do need fresh herbs for that chimichurri to shine.

For the Chimichurri:

Fresh parsley (1 cup, packed) — This is the base. Don’t use dried parsley here; it’s just not the same. Buy a big bunch from the store. If it’s wilting, wash it, dry it thoroughly, and freeze it until you’re ready to use it.

Fresh cilantro (1/2 cup, packed) — I use a mix of parsley and cilantro. Some people use only parsley, but the cilantro adds a nice brightness that balances the oil. If your family hates cilantro, use all parsley.

Garlic (4-5 cloves) — Fresh garlic is non-negotiable. Jarred garlic has a weird metallic taste that really shows up in a raw sauce like this. Minced finely or crushed.

Red wine vinegar (1/4 cup) — This provides the acid. Apple cider vinegar works too, but red wine vinegar has a sharper bite that cuts the fat better.

Olive oil (1/2 cup) — Use extra virgin olive oil. This is a raw sauce, so the oil is the main flavor carrier. Don’t skimp on quality here. It doesn’t need to be fancy, but avoid the cheap stuff.

Red pepper flakes (1 teaspoon) — Optional, but recommended. It adds a gentle heat. Adjust based on your spice tolerance.

Dried oregano (1 teaspoon) — This is a classic chimichurri ingredient. It adds an earthy depth that fresh herbs alone can’t provide.

Salt and black pepper — To taste. Generous salt is key.

For the Steak:

Flank steak (1.5 to 2 pounds) — Look for a steak that’s relatively uniform in thickness. If it’s super uneven, ask your butcher to trim it. You want it to cook evenly.

Salt — Kosher salt is best for seasoning meat.

Black pepper — Freshly cracked.

Oil for grilling — A neutral oil like canola or vegetable oil to brush on the grates.

Equipment Needed

You don’t need fancy gear for this. Here’s what I actually use:

Grill — I use a charcoal grill because I love that smoky flavor, but a gas grill works just as well. In a pinch, you can use a grill pan on the stovetop, though you’ll miss out on the outdoor vibe.

Food processor or blender — For the chimichurri. I find a food processor gives the best texture—chopped but not pureed. A mortar and pestle works if you want to do it by hand, but it takes longer.

Meat thermometer — Highly recommended. Flank steak goes from perfect to shoe-leather fast. An instant-read thermometer takes the guesswork out. Target 130-135°F for medium-rare.

Cutting board — You’ll need a sturdy surface for slicing the steak against the grain.

Sharp knife — A sharp chef’s knife makes slicing the steak clean and easy. A dull knife will tear the meat.

How to Make It: Step-by-Step

Alright, let’s get cooking. This is straightforward, but there are a few tricks to keep the steak tender and the sauce bright.

Step 1: Make the Chimichurri (10 minutes)

Start with the sauce. If you’re making this ahead, do it first. In a food processor, pulse the parsley, cilantro, garlic, red pepper flakes, and oregano until finely chopped. You want it minced, not a smooth green paste. Then, with the processor running, slowly drizzle in the olive oil and red wine vinegar. Pulse a few more times to combine. Taste and add salt. Set aside. If you’re making it ahead, cover and refrigerate. It will thicken in the fridge, so let it sit at room temperature for 20 minutes before serving.

Step 2: Prep the Steak (5 minutes)

Take your flank steak out of the fridge about 20-30 minutes before grilling. Let it come to room temperature. This helps it cook more evenly. Pat it dry with paper towels—dry meat sears better than wet meat. Season generously on both sides with salt and black pepper. Don’t be shy with the salt; the steak needs it.

Step 3: Heat the Grill

Get your grill hot. I like high heat for flank steak. If you’re using charcoal, build a two-zone fire (hot on one side, cooler on the other). If you’re using gas, turn all burners to high. Clean the grates well and brush them with oil to prevent sticking.

Step 4: Grill the Steak (10-12 minutes)

Place the steak on the hot grill. Cook for 5-6 minutes per side for medium-rare. You want nice grill marks, so don’t move it around too much. If you see flare-ups from fat dripping, move the steak to the cooler zone temporarily. Use a meat thermometer to check the internal temperature. Pull it off at 130°F for medium-rare. It will continue to cook slightly while resting.

Step 5: Rest the Steak (10 minutes)

This is the hardest part. You want to cut into it immediately, but you must let it rest. Transfer the steak to a cutting board and tent it loosely with foil. Let it rest for at least 10 minutes. This allows the juices to redistribute. If you cut it too soon, all the juice runs out, and the meat is dry.

Step 6: Slice and Serve

After resting, slice the steak against the grain. This is crucial. Flank steak has long muscle fibers. If you slice with the grain, it’s chewy. If you slice against the grain, it’s tender. Look for the direction the fibers run, cut perpendicular to them, and slice into thin strips. Serve immediately with the chimichurri drizzled over the top.

Expert Tips & Tricks

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

Always Slice Against the Grain
I can’t stress this enough. I’ve made this mistake twice, and the steak was tough. Look closely at the steak before you cut. The fibers run in one direction. Cut across them, not along them. Thin slices are better than thick chunks.

Don’t Overcook It
Flank steak is lean. It has no fat to keep it moist, so if you overcook it, it dries out fast. Medium-rare is best. If you prefer medium, pull it at 140°F. Anything beyond that, and it’s risky. Trust your thermometer.

Make the Sauce Ahead
The flavors in chimichurri improve over time. Making it the day before actually makes it taste better. The herbs soften slightly and marry with the vinegar and oil. It’s a huge time-saver on the day of.

Let the Steak Rest
I know it’s tempting to cut it right away. But resting is non-negotiable for tender meat. Ten minutes is the sweet spot. If you’re short on time, don’t skip it entirely. Even 5 minutes helps.

Variations & Substitutions

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

Cilantro-Lime Chimichurri
Swap the red wine vinegar for lime juice and add the zest of one lime. It’s brighter and more citrusy. Great with fish or chicken too.

Olive Oil Marinade
If you prefer a marinated steak, rub the flank steak with olive oil, garlic, salt, and pepper before grilling. The chimichurri still works as a finishing sauce.

Grilled Vegetables
While the steak rests, throw some asparagus, zucchini, or bell peppers on the grill. They soak up the chimichurri beautifully. I also love pairing this with grilled bacon-wrapped corn for a classic summer side.

Gluten-Free
This recipe is naturally gluten-free. Just double-check your red wine vinegar and oregano to ensure they’re processed in a GF facility if you’re strictly avoiding gluten.

Vegan Option
Use the same chimichurri and serve it over grilled portobello mushrooms or cauliflower steaks. The sauce is the star here, so it works well with plant-based proteins.

Serving & Storage

How to Serve:
I serve this straight from the cutting board. It looks rustic and festive. Pair it with charred corn zucchini elote pasta salad for a colorful, hearty side. A simple green salad with lemon vinaigrette also works well to balance the richness.

Refrigerator:
Store leftover steak in an airtight container for up to 3 days. The chimichurri keeps for up to a week in the fridge. Keep them separate until you’re ready to eat.

Reheating:
Reheat sliced steak gently. I recommend adding it to a skillet with a splash of broth or water over low heat. Or, wrap it in foil and warm it in a 250°F oven for 10 minutes. Avoid the microwave—it can make the steak tough and dry.

Freezing:
I don’t recommend freezing the steak after cooking. The texture suffers. The chimichurri can be frozen, but the herbs may lose some brightness. Fresh is best for both.

Meal Prep Tip:
Slice the steak after resting and store it in the fridge. Reheat slices gently for lunch. Or, use the leftover steak in tacos or burrito bowls for a quick, flavorful lunch.

Nutrition Information

I’m not a nutritionist, but here’s the breakdown if you’re tracking. This is per serving (based on 6 servings, with about 4oz steak and 2 tablespoons chimichurri).

Nutrient	Amount
Calories	320
Protein	28g
Carbs	2g
Fat	22g
Fiber	1g
Sodium	280mg

What’s Good: High protein, low carb, healthy fats from olive oil.
What to Know: Higher in fat due to the olive oil and steak. If you’re watching calories, measure your oil for the chimichurri.

My Take: This is a healthy, protein-packed meal. The chimichurri is oil-based, so it’s calorie-dense, but it’s mostly heart-healthy fats. It’s a far cry from processed restaurant meals.

Final Thoughts

So that’s my grilled flank steak with chimichurri! It’s simple, it’s affordable, and it’s a total crowd-pleaser. I love that it feels special enough for Labor Day but easy enough for a Tuesday night. My family asks for it regularly, and I’m always happy to oblige.

Make it yours! Try different herbs, add more heat, or serve it with your favorite summer sides. The best part is that it’s forgiving. You can’t really mess this up. If you make this, drop a comment and let me know how it turned out! I love hearing from you. And if you need more easy family dinner ideas, check out creamy boursin cheese stuffed chicken or sheet pan sausage and peppers for more weeknight wins.

Happy grilling! And I hope your Labor Day is filled with good food and great company.

Frequently Asked Questions

Can I use skirt steak instead of flank steak?

Yes! Skirt steak is very similar. It’s thinner and has a more intense beefy flavor. Cook it for the same amount of time, and don’t forget to slice against the grain. It’s a great swap.

Can I make the chimichurri in advance?

Absolutely. In fact, I recommend it. The flavors meld and improve after sitting in the fridge for 24 hours. Store it in an airtight jar. It will keep for up to a week.

Why is my flank steak tough?

Usually, it’s because you didn’t slice against the grain, or you overcooked it. Flank steak is lean, so it dries out quickly if cooked past medium-rare. Always check the temperature and slice thinly across the fibers.

Can I grill this indoors?

Yes. Use a cast-iron skillet or a grill pan on high heat. It won’t have the same smoky flavor, but it will still be delicious. Just make sure your kitchen is well-ventilated!

How do I store leftovers?

Store the sliced steak and chimichurri separately in airtight containers in the fridge for up to 3 days. Reheat gently to avoid drying out the meat.

Is chimichurri spicy?

It has a gentle heat from the red pepper flakes, but it’s not fiery. You can adjust the amount to your taste. If you want it milder, use half a teaspoon. If you want it hotter, add more.

What sides go well with this?

Grilled vegetables, corn on the cob, a fresh salad, or roasted potatoes. I also love serving it with creamy key lime pie for dessert to keep the summer theme going.

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