Grilled Flank Steak with Béarnaise Butter

Grilled Flank Steak and Asparagus with Béarnaise Butter is easy, delicious, and yet as sophisticated as it’s name!

Grilled Flank Steak and Asparagus with Béarnaise Butter

This month our theme for Progressive Eats is ‘It’s Grilling Time!’ and I could barely wait to share the dish I made; a Grilled Flank Steak with Béarnaise Butter. It was amazing!

I couldn’t wait to get into the theme for this month since I love to grill; rain or shine or even snow but maybe not blizzard; even I have limits. So of course my grill is giving me fits. I’ve replaced some parts and thought I was finally ready to go when I noticed some hornets buzzing around it right above the controls.

Want to save this recipe?
Enter your email & I’ll send it to your inbox. Plus, get great new recipes from me every week!
Save Recipe

Not thinking they were meat eaters (or hoping) I sprayed those critters and they’ve now disappeared. Now the gas line seems to have a leak but I’m nothing if not tenacious (no, NOT stubborn) and managed to get one section going strong enough to make this dish. Time for a new grill!

Grilled Flank Steak and Asparagus with Béarnaise Butter

My choice for this month was a recipe I noticed in Fine Cooking Magazine. Of particular interest was their calling for Beef Flap Meat. It sure looked like flank steak so I was off to find out more about it and possibly source some locally.

Supposedly less expensive than flank steak it comes from the same area of the cow and shares the same characteristics. Like flank and flatiron steak, beef flap steak can also be fibrous and chewy like the other less tender cuts of the animal.

Preparation is key. Scoring the meat and marinating it for tenderness is essential. Cooking it hot and fast is important too and maybe most important is not overcooking it. There is little fat in flank, flatiron or flap steak so recipes like this for Grilled Flank Steak with Béarnaise Butter are not the best for well done steak lovers.

For me, medium means it’s been overcooked; a nice quick cook with medium rare results is perfect. Last but not least, slicing it across the grain is the final step to assure a tender, juicy piece of meat. When done right I don’t think it can be beat! When done wrong, it’s been likened to trying to eat rubber bands. Don’t mess it up!

The one thing I found that sets flap steak apart from flank steak was that it was nowhere to be found (much like flatiron meat which gets sourced by restaurants so I don’t even try to find it). I checked a couple of local stores and even a specialty store and nada. Nothing. Zip. Zilch. Reminds me of trying to find pork belly a couple of years ago.

Grilled Flank Steak and Asparagus with Béarnaise Butter

So flank steak it is. And I’m not complaining. I love this cut of meat; it is so versatile. Changing the marinade ingredients can see it go from Italian to Mexican to Asian to this French inspired dish of Grilled Flank Steak with Béarnaise Butter.

I’ve previously used it for fajitas, a quick stir fry and now this; no doubt I will be making this again and again. The seasoning was perfect and this Grilled Flank Steak and Asparagus with Béarnaise Butter was so easy to make on the grill and, well, there is butter. Oh the butter.

You know how anything with a French name sounds sophisticated and thus must be complicated? This is not that. Simply butter, shallots, tarragon, white wine and white wine vinegar and it’s magical what happens. Of course slathering butter over meat is always a good thing but this was beyond that; it was truly superb.

It was a gift from Heaven. It was perfectly seasoned meat and asparagus with a divine butter! Enough superlatives? Want to know how much I loved it? I did not share it with my neighbors. Nope…I was happy to have leftovers for 3 nights in a row after the first dinner!

Now if I could just get my virtual friends to join me ‘for real’ that would be perfect! Be sure you check out their dishes after the recipe. This is such a talented group of cooks; they will not disappoint.

Flank Steak with Asparagus and Bearnaise Butter

Grilled Flank Steak and Asparagus with Béarnaise Butter

No ratings yet
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Main Course
Cuisine American
Servings 4 servings
Calories 243 kcal


  • 2 sprigs fresh tarragon
  • 2 ounces unsalted butter softened
  • 2 tablespoons shallot minced
  • 1 tablespoon dry white wine or vermouth
  • 1 tablespoon white wine vinegar
  • Kosher salt and freshly ground black pepper
  • 1-1/2 pounds beef flank steak gently scored
  • 1 bunch asparagus trimmed
  • 1 tablespoon olive oil


  • Strip the tarragon leaves from the stems, finely chop the leaves to yield about 2 tsp., and set aside.
  • In an 8-inch skillet, melt 1 Tbs. of the butter over medium-low heat. Add the shallot and tarragon stems, and cook, stirring frequently, until the shallot is translucent, about 2 minutes. Add the wine, vinegar, and 1 Tbs. water, increase the heat to medium, and cook until the liquid is mostly evaporated, about 3 minutes. Transfer to a small bowl, remove and discard the tarragon stems, and let cool completely. Add the remaining 3 Tbs. butter, the chopped tarragon, 1/4 tsp. salt, and 1/8 tsp. pepper, and mix with a fork until well combined. Set aside until ready to use.
  • Prepare a medium-high (400°F to 475°F) gas or charcoal grill fire. Put the meat and asparagus on separate sides of a large rimmed baking sheet (or similar). Coat with the olive oil, and season generously with salt and pepper. Grill the meat, turning every 2 minutes, until cooked to your liking, 6 to 8 minutes for medium (140°F). Transfer to a cutting board, cover loosely with foil, and let rest. Meanwhile, grill the asparagus, turning after 1 minute, until charred and tender, 2 to 3 minutes. Transfer to a serving platter. Thinly slice the meat against the grain, arrange on the platter with the asparagus, top both with dollops of the butter, and serve.


The butter may be made up to 1 week ahead; refrigerate and return to room temperature before using.


Nutrition Facts
Grilled Flank Steak and Asparagus with Béarnaise Butter
Serving Size
1 Serving
Amount per Serving
% Daily Value*
* Percent Daily Values are based on a 2000 calorie diet.
Keyword asparagus, bearnaise, flank steak
Tried this recipe?Let us know how it was!
Progressive Eats

Welcome to Progressive Eats, our virtual version of a Progressive Dinner Party. This month we’re featuring It’s Grilling Time! hosted by Jane Bonacci, the author of The Heritage Cook.

Today we are sharing recipes that are prepared on a barbecue or grill. Savory and sweet, you can cook your entire meal outside keeping your kitchen cool and perfect for hot summer evenings. We know you’ll enjoy the kiss of smoke in every bite!

Main Course

Vegetables/Side Dishes


Similar Posts


  1. What a beautiful, classic dinner! It’s perfect for any dinner party, year round. I don’t know about the hornets, but I do know some bees are definitely carnivorous. Glad you were tenacious and made this delicious dinner for us all. Now, if I could only actually find a way to download it onto my plate here in Nevada!

    1. We have had the year of the hornet; you know they’re bad when Home Depot has spray front and center! But they were not getting my shrimps; mine all mine! 🙂

  2. I love grilled flank steak. Hadn’t had it in years, until just a week or so ago. Guess great minds think alike:) But mine didn’t have the lovely bearnaise butter – I can’t wait to try that with my next steak. Your plate looks so inviting, I might just have to fire up the grill tonight!

  3. Oh man, The Artist and I would inhale this Barb! Beautiful and I love that the whole meal is on one platter – less to wash. 😉 I am impressed by your tenacity (not stubbornness LOL) in getting your grill up and running again. You are my hero for blasting the hornets! And I am swooning over your Bearnaise butter – brilliance!!! P.S. Thanks so much for the shout-out of the book, I really appreciate it. <3

    1. I think you probably would! I seriously had to quit taking just another taste or the entire steak would have been gone.

      I still have work to do on the grill. It’s a nice big grill and I’m not quite ready to replace it but finding what is wrong and then parts to fix it is sure a challenge. Even for stubborn/tenacious me. 🙂

  4. The Beloved wants to find flap meat now, too. That article in Fine Cooking made it sound pretty ideal for quick meals! Love your flank steak–and Bearnaise is one of my favorite sauces. Making it into a compound butter sounds even better!

    1. It sounds very similar to flank steak but maybe still a bit less expensive. Ahhh…the days when flank steak was inexpensive; I miss them!

  5. I don’t think I’ve ever seen Beef Flap Meat in a store. Often don’t see skirt steak these days — I remember when it was really cheap,but no more, alas. Flank steak, though, is a staple. Good thing because it’s good stuff! Medium-rare is perfect for this cut (medium, if one must). Great dish — thanks.

    1. I have never seen it either John. I remember when I first starting cooking with flank steak; how it was a throwaway cut and so cheap. I never got that because cooked right we’ve always loved it. But the secret got out and the rest is history…I would love to discover the new kid on the block. 🙂

    1. I promise you they would. It was one of those when I had to stop myself from ‘just one more bite’ or I would have had nothing left for leftovers!

  6. I have never heard of Beef Flap Meat either but I’m intrigued and would love to see if I can ever find it. I love beef and I’m going to have to try out this recipe. I love how you served it with a side of asparagus. The kids surprisingly love asparagus. I don’t have all the ingredients for this meal but I think I’ll be giving this a try some time soon.

    1. Well let me know when you do…certainly not a common thing in this neck of the woods. I should check the Korean market; they always have stuff I can’t find anywhere else; we should go there one day!

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.