Chimichurri Flank Steak

chimichurri flank steak pinterest image.chimichurri flank steak pinterest image.

Make an incredible chimichurri flank steak for dinner! It is naturally low in carbs and high in protein. Don’t forget to make the fresh herby chimichurri sauce. It’s the perfect pairing!

chimichurri flank steak sliced with text overlay.chimichurri flank steak sliced with text overlay.

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💛 Why you’ll love it

Are you looking for something completely unique and different for dinner? This recipe is perfect for you! It tastes like something you might find at a restaurant and isn’t another boring keto recipe.

This grilled flank steak with chimichurri sauce will bust you out of your dinnertime rut and make you enjoy cooking (and eating keto) again.

Use this chimichurri recipe as a steak marinade too! It’s a really versatile sauce that you can use on more than just steak.

Dinner tonight comes from South America. This recipe is packed with flavor from a variety of different Latin countries.

When you are searching for easy recipes that you can make over and over again, this is the perfect one for you!

📋 Ingredients

This recipe uses only simple ingredients. All the exact amounts are listed in the printable recipe card at the bottom of this post. First, here is a bit more information about what I used.

Grilled flank steak

You’ll need flank steak for this recipe. I like to slice it thinly into two fillets.

Chimichurri sauce

For the chimichurri sauce, you’ll need red wine vinegar and the following spices:

  • Sage
  • Chili flakes
  • Oregano
  • Parsley
  • Sea salt

You should also use fresh garlic cloves.

Olive oil

You will also need olive oil to use in the chimichurri sauce.

chimichurri steak recipe ingredients.chimichurri steak recipe ingredients.

💭 Tips

  • Mix the sauce in a food processor. This will speed up the process and help everything incorporate completely.
  • Marinate steak overnight. The longer you let it marinate, the more the flavors will seep into the meat.
  • Use a cast-iron skillet. That way you can let it stay warm in the oven if you need to.

🔪 Instructions

This is a pretty simple recipe that anyone can make. Here are some photos of the process and a few more tips.

initial seasonings mixed with hot water.initial seasonings mixed with hot water.

Make the chimichurri sauce

Add the spices to a small mixing bowl and then add some hot water. This will hydrate the spices and bring out their flavors.

adding additional seasonings to bowl.adding additional seasonings to bowl.

Chill the chimichurri cauce

Add the vinegar and oil to the mixing bowl and then place the sauce in the refrigerator until you are ready to use it.

chimichurri saucechimichurri sauce

Prepare the flank steak

Cut the steak into thin slices by cutting down the middle against the grain. Place the steaks in a skillet or food storage bag and pour ¼ of the chimichurri sauce on top of them.

Let the flank steak marinate for at least 30 minutes. Then, let it reach room temperature before you cook it.

Cook the steaks

Next, cook the steaks in a cast-iron skillet until it reaches your desired doneness.

Let it rest on a cutting board for 5 minutes and then serve immediately. Add some chimichurri sauce on top before serving.

steak with sauce in baking pan.steak with sauce in baking pan.

🍽️ Serving suggestions

There are a lot of different ways you can serve this delicious chimichurri sauce. Add some creamy mashed cauliflower on the side or your favorite cauliflower rice.

This flank steak will also taste amazing if you serve it with some Mexican zucchini nachos as an appetizer. They have a lot of similar flavors and spices!

📒 Variations

There are so many different ways you can use this incredible chimichurri sauce. Use it to marinate chicken breasts or drizzle it on top of chicken wings.

If you like how this steak turned out, try adding a bit of fresh-squeezed lime juice on top at the very end.

I used all dried herbs, but you can replace them with fresh herbs or Italian seasoning.

Instead of red wine vinegar, use apple cider vinegar. It will give the sauce a little more tangy flavor.

I have also heard of people adding a few teaspoons of soy sauce, but I think it makes it taste a tad too salty. Try it and see what you think!

chimichurri flank steak sliced on cutting board with sauce container.chimichurri flank steak sliced on cutting board with sauce container.

🙋 FAQs

Before we get to the complete recipe for flank steak and chimichurri sauce, here are some questions people often ask about how to make it. If you don’t see your question in this list, please leave it in the comments.

How do you store leftover chimichurri sauce?

Keep it in an airtight container in the refrigerator for up to two weeks. I like to store homemade sauces in a mason jar with a lid because it screws on tightly with a perfect seal that is spill-proof.

Is flank steak and skirt steak the same thing?

No, they are not the same thing. Flank steak is a thicker and wider cut of meat. Skirt steak is lighter and longer than flank steak. You can use them interchangeably in this recipe.

How do you make chimichurri sauce spicier?

Add red pepper flakes and cayenne pepper if you want this sauce to have a bit more of a kick. You can even sprinkle some hot sauce on top too.

What is the cooking temperature of steak?

If you want to grill flank steak, then cook it to an internal temperature of at least 145°F. Use an instant-read food thermometer to check the temperature as you cook.

Here are the cooking times you should follow.

For a thick piece of flank steak: 3 minutes for each side for medium-rare; 4 minutes for each side for medium.
For a thin piece of flank steak: 2 ½ minutes for each side for medium-rare; 3 minutes per side for medium.

If you enjoyed this grilled flank steak with chimichurri sauce, then I have more delicious recipes you should check out next. These keto beef recipes are low-carb and incredibly tasty at the same time.


📖 Recipe

chimichurri flank steak sliced on cutting board.chimichurri flank steak sliced on cutting board.

Chimichurri Flank Steak

Author: Lisa MarcAurele

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Make an incredible chimichurri flank steak for dinner! It is naturally low in carbs and high in protein. Don’t forget to make the fresh herby chimichurri sauce. It’s the perfect pairing!

Prep Time1 hr

Cook Time10 mins

Total Time1 hr 10 mins

Course: Main Course

Cuisine: American, Mexican

Diet: Diabetic, Gluten Free

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Servings 2


Chimichurri sauce


  • To a small bowl, add the dried sage, chilli flakes and oregano along with the hot water and mix to hydrate. Add the minced garlic, parsley, salt and mix. Finish with vinegar and oil. Mix well, transfer to a pot with a lid and keep refrigerated.

  • If using a piece of flank steak, cut down in the middle against the grain to fit into your skillet.

  • Place the steak in a baking dish, pot or food storage bag and pour ¼ cup of the chimichurri sauce, mix well and leave marinating for at least 30 minutes up to 2 hours in the fridge.

  • Remove the steak from the fridge for 15 to 20 minutes and leave it to reach room temperature before cooking. This is important to reach the perfect doneness.

  • Bring a large cast-iron or heavy-bottomed skillet over medium heat for 1 minute with a little olive or oil until shimmering but not smoking. Remove the meat from the sauce scrape the excess and sprinkle a little extra sea salt. If using a small skillet, cook one steak at a time.

  • Sear the steaks for 3-4 minutes on each side depending on the thickness of steaks and turn with kitchen tongues. See notes.

  • Remove meat from the skillet and leave to rest on a chopping board for 5 minutes. Slice into ½ inches strips against the grain. Place in a serving dish and add more chimichurri sauce on top. Serve with more sauce if desired.


Cooking time for a thick piece of flank steak:
– 3 minutes each side for medium-rare
– 4 minutes each side for medium

Cooking time for a thin piece of flank steak:
– 2 ½ minutes each side for medium-rare
– 3 minutes per side for medium

Low Carb Sweeteners | Keto Sweetener Conversion Chart

low carb yum simple keto cookbooklow carb yum simple keto cookbook

Additional Info

Net Carbs: 0 g | % Carbs: NAN % | % Protein: NAN % | % Fat: NAN % | SmartPoints: 0



Note on Nutritional Information

Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.

Unauthorized use of this material without written permission from Lisa MarcAurele is strictly prohibited unless for personal offline purposes.
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