Grilled Steak with Avocado Sauce

Grilled Steak with Avocado Sauce is a flavor explosion! The steak is seasoned and then grilled to perfection and served along side a creamy avocado sauce. Great on it’s own or served in tacos! 

Around here we are all about the taco Tuesday, usually. But every once in a while I like to mix things up by serving something a little different but that still has the Mexican flare that my family has come to look forward to every Tuesday. 

That is where this Grilled Steak with Creamy Avocado Sauce comes into play. The steak is seasoned with cumin, chili powder, onion and garlic and then grilled to perfection. And while the steak is fantastic on it’s own, we need to talk about this avocado sauce. 

Think part guacamole, part creamy sauce. I was spreading it all over the steak, dunking my chips in it and even eating it with a spoon. It’s that good guys. But it’s not just me saying it! There are reviews from fellow readers too :) 

Andrea says: Fantastic! Followed the recipe to the tee and it was delicious. Big hit with my husband and now on our meal rotation. It was recommended to me by my brother who lives in Taiwan. Kudos to the chef!

So let’s talk about what you’ll need to get this easy dinner on your table. 

What ingredients do you need: 

There are two components to this dish: the steak and the avocado sauce so I’ve separated this into 2 sections. 

To make the steak you’ll need: 

• Flat Iron Steak: If someone asked me what my favorite cut of steak was, I’d have to say flat iron. Not ribeye (although delicious), NY strip, or even Filet Mignon. Flat Iron Steak is my absolute favorite cut. It is from the top blade of the beef and is extremely tender. It is great for grilling and can be used in so many different recipes. I also like that the price point tends to be lower than the pricier cuts. Check out the Beef It’s What’s For Dinner article for more info on Flat Iron Steaks .
• Granulated Garlic/Onion Powder/Cumin/Chili Powder/Salt: These ingredients are what is going to give your steak that latin flavor. You can substitute garlic powder for the granulated garlic. If you substitute garlic salt, I’d omit the additional salt. 

To make the Avocado Sauce: 

• Avocado: Obviously. 
• Cilantro: I know some don’t like cilantro but I think it works really well in this sauce. 
• Garlic: 1-2 small cloves is all you need, you don’t want to overpower the sauce. 
• Red Wine Vinegar: This adds acidity which helps lighten the creaminess of the sauce. 
• Olive Oil: Helps make the sauce really smooth. 
• Salt: To help bring out the flavors of the other ingredients. 
• Lime: More acidity to really brighten the sauce. 

Step by Step Photos and Instructions: 

This steak recipe is actually incredibly easy to make which makes it perfect for weeknight meals, or nights when you want to get something on the table without sacrificing any deliciousness. 

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STEP #1: Combine all of the seasonings for the steak together in a bowl. And rub them all over the steak. Making sure to season both sides. 

STEP #2: Preheat your grill to medium heat. 

STEP #3: Place all of the ingredients to make the sauce into a food processor (or blender) and process until smooth. Cover and refrigerate until you’re ready to use. 

STEP #4: Cook steak on the preheated grill. Depending on the thickness of your steak this should take 5 – 7 minutes per side for medium rare. Remove steak from grill and allow to rest for 10 minutes.

DES’ TIP: Please don’t skip the resting part! When steak has a chance to rest, the juices redistribute and result in a much more tender bite. This goes for any steak, not just this one! 

STEP #5: Slice steak against the grain and serve with the sauce. 

As you can see the sauce is pretty thick. I like to serve it with a bowl and a spoon along side so people can chose to dip their steak or spoon it over the top. But either way, if the indication from the way my family gobbled this down means anything, your family is going to love this too. 

You can serve this steak on it’s own with the sauce as a main dish. Or you can slice it and serve it with the sauce in tacos, on top of nachos or even on top of a burrito bowl. You’ll love it! 

Note: This recipe was originally posted in 2010. It was updated with new photos, step by step instructions and nutrition information in 2022. 

If you want even more sauce options for the next time you make steak, here are some of my favorite sauce recipes: 

Horseradish Sauce

Easy Garlic Aioli

Chimichurri Sauce Recipe

Peppercorn Sauce

Want more Flat Iron Steak Recipes? I’ve got you covered!

Grilled Rosemary Balsamic Flat Iron Steak

Flat Iron Steak with Dijon Caper Sauce

Oregano and Garlic Flat Iron Steak

Broiled Flat Iron Steak with Herb Roasted Mushrooms

Grilled Flat Iron Steak with Tomato Salad