Flat Iron Steak with Balsamic Roasted Radicchio

This flat iron steak with balsamic roasted radicchio is the perfect flavorful weeknight meal. Steak, radicchio, balsamic vinegar and blue cheese – how can you go wrong?

Flat Iron Steak with Balsamic Roasted Radicchio by Nutmeg Nanny


You know those people who don’t eat red meat? Yeah, I don’t get it. I know the world is all about eating white meat but good grief do I love me the red stuff. Especially if it’s rare – yeah I’m one of those people. However, you know what really pisses me off? People who take a delicious steak and smother it in ketchup or steak sauce. Why would you do this?!

Listen, I’m a firm believer in the whole “eyes on your own plate” movement but I cannot help giving a side glance when I see the whole ketchup/steak sauce smothering. I feel like those two condiments were made for covering up crappy taste. So unless you were served a steak on an airplane I see no reason you should ever smother it anything but a dab of butter and sprinkling of salt.  I kid you not I once saw a man order a $80 steak at a steak house and then as for steak sauce. Sigh.

Flat Iron Steak with Balsamic Roasted Radicchio by Nutmeg Nanny

Here is the thing though, I will still love you if you confess you smother your steak in sauce. I just can’t get behind your choice, that’s all. Luckily this steak requires ZERO sauce. Trust me! This is one of those all in one messy plate meals. I’m not sure that is a real meal category but it works in my household. It’s a simple flat iron steak topped with balsamic roasted radicchio and served over a bed arugula. For added deliciousness I also sprinkled on a just a little blue cheese. Who doesn’t love blue cheese?

I made this dish when I was reviewing my Relished Foods box. This is the same box where I made that totally delicious (and pretty) mahi mahi en papillote. Trust me! If you need a little weeknight help in the kitchen you have to give Relished Foods a try!

Flat Iron Steak with Balsamic Roasted Radicchio by Nutmeg Nanny


Flat Iron Steak with Balsamic Roasted Radicchio

This flat iron steak with balsamic roasted radicchio is the perfect flavorful weeknight meal. Steak, radicchio, balsamic vinegar and blue cheese - how can you go wrong?

Yield: 2 servings

Prep Time: 15 minutes

Cook Time: 15 minutes per batch

Total Time: 30 minutes


  • 2 (8 ounce) flat iron steaks
  • Kosher salt and pepper
  • 1/3 cup balsamic vinegar
  • 2 garlic cloves, minced
  • 1 shallot, minced
  • 1 green onions, sliced
  • 1 large sprig rosemary, minced
  • 1 head radicchio, quartered
  • 1 tablespoon olive oil
  • 2 cups baby arugula
  • 1/2 cup crumbled blue cheese


Lay out steaks and season with kosher salt and pepper, set aside.

In a medium sized mixing bowl whisk together balsamic vinegar, garlic cloves, shallot, green onion and rosemary. Add in quartered radicchio and toss to coat. Let the radicchio sit and marinade for at least 10 minutes.

While the radicchio is marinading start pre-heating your oven to 375 degrees. Place marinaded radicchio to a parchment lined baking sheet and add to the oven. Let roast for about 8 minutes until the radicchio is soft.

While the radicchio is roasting start cooking your steak. Add 1 tablespoon olive oil to a large pan set over medium high heat.

Once the oil is hot add the steaks and quickly cook on each side until you have reached desired doneness. Depening on thickness it should take about 5 minutes per side to cook until medium.

Lay out two plates and add 1 cup baby arugula per plate. Top each arugula pile with steak, half the roasted radicchio and 1/4 cup blue cheese per plate.

Note: You could also grill the steak if you wanted but you want to make sure you have an eye on the roasting radicchio since it cooks up pretty quickly.

24 Responses to “Flat Iron Steak with Balsamic Roasted Radicchio”

  1. #
    Rachel @ Baked by Rachel — April 29, 2014 at 9:24 am

    I’m not even much of a steak person but that is gorgeous!

  2. #
    Christine from Cook the Story — April 29, 2014 at 9:26 am

    This makes me want to fire up the grill and get happy with a steak!

  3. #
    Brenda@SugarFreeMom — April 29, 2014 at 9:49 am

    That looks absolutely stunning! I love balsamic on everything!

  4. #
    Sommer @ASpicyPerspective — April 29, 2014 at 10:55 am

    This makes my mouth water just looking at it! Pinned

  5. #
    Amy @Very Culinary — April 29, 2014 at 12:05 pm

    After you figure out the whole “no meat movement” can you explain the whole “no bread or grains” movement to me? Because… blerg. Anyway, everyone we know likes their steak red. I do like mine pretty dead, but I will agree that ketchup shouldn’t come anywhere near it. This is absolutely my kind of dish – all of those ingredients are perfect together! And the photo is awesome!

  6. #
    Ashley @ Wishes & Dishes — April 29, 2014 at 2:13 pm

    I’m not huge on steak but this looks to die for!! Wow!!

  7. #
    Ginny McMeans — April 29, 2014 at 2:39 pm

    All of the radicchio mix sounds so delicious!

  8. #
    Liz @ The Lemon Bowl — April 29, 2014 at 3:04 pm

    I love beef and blue cheese and arugula. I want to eat this entire plate!

  9. #
    Rachel Cooks — April 29, 2014 at 4:06 pm

    You’re probably going to disown me for saying I don’t like blue cheese but this still looks so amazing! I love steak on a salad.

  10. #
    Marly — April 29, 2014 at 4:21 pm

    Arugula is one of my favorite greens. Believe it or not, I can see a vegan version of this recipe by using the marinade with tofu. I bet it would be really tasty. Thanks for the inspiration!

  11. #
    Angie | Big Bear's Wife — April 29, 2014 at 4:22 pm

    Ahh don’t kill me haha but I love the taste of steak sauce that’s why I use it 😉 (I also put it on baked potatoes!) But that steak does look amazing!

  12. #
    Norma | Allspice and Nutmeg — April 29, 2014 at 5:04 pm

    Steak sauce is a no no in our house. But I love all the flavors going on in here. Pinning!

  13. #
    Paula - bell'alimento — April 29, 2014 at 6:49 pm

    You are so right on the money with this one!

  14. #
    Kim Beaulieu — April 29, 2014 at 11:23 pm

    Oh my gosh Brandy, I’ll be right over. I hope you saved me a giant bowl of this.

    We actually love sauce here, but we’re super picky about brands. My daughter is crazy for it. But I like it cooked in. Just poured on top is horrid. You want it cooked into the meat, then it’s the bomb, and gets all caramelized.

  15. #
    Jessica (Savory Experiments) — April 30, 2014 at 7:57 am

    Beautiful photos! I absolutely love flat iron steak and steak with a balsamic reduction, so this is right up my alley!

  16. #
    Jenn @ Deliciously Sprinkled — April 30, 2014 at 9:00 am

    YUM, this iron steak looks delicious! And your photos are gorgeous! 🙂

  17. #
    Christiane ~ Taking On Magazines — April 30, 2014 at 10:00 am

    I love flat iron steak … it’s so much more tasty than many of the others. I’m glad you used it in this because it looks delicious.

  18. #
    Claire Gallam — April 30, 2014 at 10:18 am


  19. #
    Courtney @ Neighborfood — April 30, 2014 at 10:19 am

    Well, hello there, gorgeous! Seriously, this steak is making my mouth water. I used to always think steak needed ketchup until I started ordering it medium instead of well done. Makes all the difference!

  20. #
    Susan — April 30, 2014 at 1:58 pm

    Gorgeous steak and cooked just the way I like it, still bleeding! Flat iron steak is a favorite too, so much flavor and not enough people make it. You don’t have to worry though, no steak sauce at my house.

  21. #
    Terese | Topline Foods — April 30, 2014 at 2:50 pm

    Yum! Love a good grass fed steak salad! And, flat iron is such a flavorful cut!

  22. #
    ~Bea~ — May 1, 2014 at 6:22 am

    I am so with you! All you need on a steak is a little butter and salt. I never bought steak sauce in my life and use ketchup about once a year or so. Two things you will never find in my fridge. That looks so delicious! I have missed all your comments since the Bachelor went off…lol..

  23. #
    Joanne — May 1, 2014 at 3:50 pm

    My dad was always a purist when it came to steak…a little bit of salt and NOTHING else. Or no steak for you! You guys would totally have gotten along.

  24. #
    Joelen — May 2, 2014 at 10:22 am

    Anything with blue cheese will always catch my eye and this dish looks fantastic!

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