Grilled Flank Steak with Avocado Chimichurri

Juicy Grilled Flank Steak topped with a zesty Avocado Chimichurri is the perfect easy summer recipe that’s full of flavor. It’s ready in less than 20 minutes – serve it over rice, lettuce, in tacos or on a toasted bun!

Chimichurri is quickly becoming one of my favorite ways to add flavor to a dish, whether it’s Grilled Chimichurri Chicken or Zesty Chimichurri Burgers. But for today, let’s focus on this grilled flank steak with avocado chimichurri! It’s super simple to make, gluten free, and fits into the paleo diet—and best of all, it packs a HUGE punch of flavor.

Why This Is My Favorite Way to Do Flank Steak

Flank steak has always been a favorite in our household, but this method takes it to a whole new level. Here’s why we love it:

• Tender and juicy. The thing about flank steak is that it can be tough if not cooked properly. Grilling is perfect for it because when you cook the steak quickly over high heat, you get tender and juicy results. (Looking for more delicious ways to cook flank steak? Try this Best Marinated Grilled Flank Steak Recipe or this Asian Grilled Flank Steak recipe.)
• Big flavor. The grilled flank steak is nice and simple, with just salt and pepper to season. The flavor comes from the chimichurri! It’s packed with fresh herbs, lime juice, tangy vinegar, and some heat from the red pepper flakes. Then I mixed this chimichurri base with creamy avocado and whoazer! It totally puts this dish over the top. 
• A 20-minute dinner. And did I mention it’s done in less than 20 minutes? You’ll have a delicious, impressive dinner on the table in practically no time at all! 

What You’ll Need

Here’s a list of the ingredients you’ll need to make this flavorful grilled flank steak recipe. Scroll down to the recipe card to find the ingredient quantities and recipe instructions.

Flank Steak:

• Flank steak – This lean cut of beef is ideal for grilling!
• Olive oil – Or another oil you like to use for grilling, like avocado oil.
• Salt and black pepper – All you need to season your grilled steak!

Avocado Chimichurri:

• Avocados – The creamy base for the chimichurri.
• Cilantro – This makes the sauce fabulously herbaceous. If you think cilantro tastes like soap, swap in parsley.
• Red wine vinegar – For a tangy kick.
• Lime juice – This adds a nice, zippy flavor. You can make your chimichurri extra citrusy by adding some zest from the lime too.
• Red pepper flakes – Adds a hint of heat, but you can skip it or add less for a milder sauce.
• Garlic – Because garlic and steak are a match made in heaven!
• Salt – To balance the flavor.

How to Make Grilled Flank Steak With Avocado Chimichurri

Here’s how easy it is to make this grilled flank steak recipe!

• Prepare. Preheat your grill to high and allow the steak to come to room temperature. Season both sides with salt and pepper.
• Grill the steak. Set the steak on the grill and cook for 4 to 6 minutes per side, or until the internal temperature reaches 130ºF. Let the steaks rest for 5 minutes.

• Make the chimichurri. Toss all of the ingredients in a bowl. 
• Serve. Slice the steak against the grain and serve it with the avocado chimichurri. 

Tips and Variations

These tips will help you make sure your grilled flank steak and avocado chimichurri turn out perfect!

• Monitor the internal temperature. Yeah, it’s a bit of a hassle, but it is SO WORTH IT. You will never over-cook your steak again and it will always be tender and juicy.
• Marinate the steak. If you’ve got the time, marinate the steak in a mixture of olive oil, lime juice, garlic, and cumin for 30 minutes before grilling.
• Top with crumbled queso fresco. Sprinkle it over the steak after adding the chimichurri. It has an awesome salty flavor and adds a little more richness!

Serving Suggestions

For a complete meal, serve the steak with warm tortillas taco-style or over a bed of rice or cauliflower rice. It would also be fantastic with a side of Air Fryer Asparagus or Crispy Garlic Herb Roasted Potatoes.

How to Store and Reheat Leftovers

• Refrigerator: Any leftover grilled flank steak can be stored in an airtight container and kept in the refrigerator for up to 3 days. The chimichurri will last about a day in the fridge, but it will start to oxidize and turn brown.
• To reheat: Warm leftover steak in the microwave or heat in a skillet over medium heat until warmed through.

More Steak Recipes

• Steak Stir Fry Recipe
• Sheet Pan Steak Fajitas
• Skirt Steak Tacos
• Grilled Ribeye Steak

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