Sliced medium-rare steak on a wooden cutting board, with some pieces showing a pink center. A person is holding a fork and knife, about to cut another piece.

Marinated Flat Iron Steak: Easy Grilling Recipe

Author

  • A smiling woman with wavy, light brown hair wears a green apron over a blue denim shirt, standing with one hand on her hip against a dark background.

    I started my food vlogging journey in 2024, when I decided it was time to share my love of cooking with folks near and far. I grew up learning the ins and outs of the kitchen from my grandparents and my mama — they taught me that a good meal can bring people together like nothing else. Now, I’m proud to carry on their passion and share those same comforting flavors with y’all.

A person pours a reddish liquid from a bottle into a measuring spoon over an open, empty zip-top plastic bag placed on a countertop.

When it comes to grilling, there's nothing quite like a marinated flat iron steak. This cut of meat is not only flavorful but also incredibly tender when cooked right. I've spent countless summer evenings perfecting my marinade, and trust me, this one brings the flavor and tenderness you crave.

With just a handful of simple ingredients, you can create a dish that'll make your friends and family think you've been grilling for years.

You're going to love how easy this recipe is. It’s perfect for a weeknight dinner or a weekend gathering. The marinade infuses the steak with rich flavors, and when you grill it, those charred bits add a smokiness that makes every bite irresistible.

Plus, it’s a crowd-pleaser that will disappear faster than a cold beer on a hot day.

So, let’s dive into this marinated flat iron steak recipe. It's straightforward and fun, and you'll impress everyone with your grilling skills.

A person places minced garlic into a resealable plastic bag containing a dark liquid marinade, preparing ingredients on a kitchen countertop.

Why You'll Love This Recipe

First off, the flavor is out of this world. The combination of red wine vinegar, garlic, and spices really elevates the flat iron steak, giving it a delicious, savory kick. Plus, the marinade helps tenderize the meat, making it juicy and melt-in-your-mouth good.

Seriously, this is how steak should taste!

Another great thing about this recipe is its flexibility. You can let the steak marinate for just a few hours or up to a day, depending on how much time you have. If you’re short on time, don’t sweat it – even a quick soak will give you a tasty steak.

And if you want to mix it up, you can easily adjust the spices or add your favorite flavors to the marinade.

Lastly, this recipe is perfect for both seasoned grillers and beginners. Whether you’re firing up the grill for the first time or you’re a pro, you’ll find success with this marinated flat iron steak. It’s simple enough to keep you relaxed while cooking, but flavorful enough to impress your guests.

A person pours dried herbs from a spice container into a clear ziplock bag containing marinade ingredients on a countertop.

Ingredients & Tools You'll Need

To get started, gather these ingredients: 2 pounds of flat iron steak, 3 tablespoons of red wine vinegar, 3 tablespoons of olive oil, 2 tablespoons of soy sauce, a tablespoon of Worcestershire sauce, 4 cloves of chopped garlic, 1/4 cup of brown sugar, 1/2 teaspoon of red pepper flakes, 1 teaspoon of smoked paprika, and 2 teaspoons of steak seasoning.

These ingredients come together beautifully, and the brown sugar is a game-changer. It caramelizes on the grill, giving the steak a nice crust. You’ll also need a large zip-top bag for marinating, a grill, and a wire rack to allow the steak to rest and drain before cooking.

Trust me, having everything prepped in advance makes the process smoother and way more enjoyable.

How To Make It

This marinated flat iron steak is all about the prep and cooking methods. The key is to let the flavors meld and for the steak to reach its ideal tenderness. You'll see, it’s all about timing and the right touch.

Preparation

Start by combining all the marinade ingredients in that large zip-top bag. Seal it up and give it a good massage to ensure the steak is completely coated. This is where all the magic starts – giving it a good mix allows the flavors to penetrate the meat.

A person holds a container of steak seasoning above a ziplock bag filled with marinade and meat on a counter.

Once your steak is marinated, pop it in the fridge for at least six hours, but if you can swing it, let it marinate overnight. Just before you're ready to grill, take the steak out and let it sit at room temperature for about 30 minutes. This step is crucial because it helps the steak cook evenly.

Cooking

Now, let’s get cooking! Preheat your grill to medium-high heat. While it's heating up, place the marinated steak on a wire rack to let any excess marinade drip off – you want that perfect sear.

Once the grill is hot, place the steak on it and listen for that satisfying sizzle. Grill for about 5-7 minutes per side, but don’t just rely on timing; keep an eye on the steak. You’re looking for a nice char on the outside and an internal temperature of about 130-135°F for medium-rare.

You’ll know it’s done when it’s nicely browned and has that delicious grilled aroma wafting through the air.

Let the steak rest for several minutes after taking it off the grill. This is important because it allows the juices to redistribute throughout the meat. When you slice it up, make sure to cut against the grain for the most tender bites.

A person wearing a striped shirt places a piece of raw meat into a ziplock bag filled with marinade on a countertop. An unopened package of meat sits beside the bag.

Serving & Variations

When it comes to serving, this marinated flat iron steak is incredibly versatile. Serve it alongside some grilled veggies or a fresh salad for a light meal. You can even slice it up and toss it into tacos or salads for a tasty twist.

A person pours olive oil from a green bottle into a plastic zipper bag filled with food, using a white measuring spoon.

A common consensus among home cooks is that adding a squeeze of fresh lime or lemon juice right before serving brightens up the flavors even more. If you want to play around with the marinade, try adding some fresh herbs like rosemary or thyme for another layer of flavor. And don’t forget – leftovers (if there are any) make for killer steak sandwiches the next day!

Frequently Asked Questions

What is flat iron steak?

Flat iron steak is a cut of beef from the shoulder of the cow, known for its tenderness and rich flavor.

How long should I marinate the steak?

For best results, marinate the flat iron steak for at least 1 hour, but ideally 4 to 8 hours.

What are some good sides to serve with marinated flat iron steak?

Good sides include grilled vegetables, mashed potatoes, or a fresh salad.

How do I know when the steak is cooked to my preference?

Use a meat thermometer; for medium-rare, aim for an internal temperature of 130F to 135F.

Can I cook flat iron steak in the oven?

Yes, you can sear it in a skillet and then finish cooking in the oven at 400F.

Wrapping Up

So there you have it – a foolproof way to make a marinated flat iron steak that’s guaranteed to impress. You’ll love how quick and easy it is, and your taste buds will thank you for the explosion of flavor. Fire up that grill and dig in!

A person pours a dark liquid from a bottle into a white measuring spoon over a ziplock bag containing marinating food. The person is wearing a striped shirt.

Recipe created by CookinWithBabe for Trust Me Try It.

Sliced medium-rare steak on a wooden cutting board, with some pieces showing a pink center. A person is holding a fork and knife, about to cut another piece.

Marinated Flat Iron Steak: Easy Grilling Recipe

Print Pin Rate
Prep Time: 10 minutes
Cook Time: 25 minutes
Total Time: 35 minutes
Servings: 4

Ingredients

  • 2lb. flat iron steak
  • 3 tbsps. red wine vinegar
  • 3 tbsps. Olive oil
  • 2 tbsps. Soy sauce
  • tbsp. Worcestershire sauce
  • 4 cloves garlic, chopped
  • 1/4 cup brown sugar
  • 1/2 tsp. red pepper flakes
  • 1 tsp. smoked paprika
  • 2 tsps. steak seasoning

Instructions

  • In a large zip-top bag, combine all of the ingredients.
  • Seal the bag and gently massage everything together, ensuring the steak is fully coated in the marinade.
  • Refrigerate and allow the steak to marinate for 6-24 hours.
  • Before cooking, remove the steak from the marinade and place it on a wire rack to allow any excess marinade to drip off.
  • Let the steak sit at room temperature for about 30 minutes.
  • Prepare the grill for direct heat cooking.
  • Grill the steak for 5-7 minutes per side, or until the internal temperature reaches 130-135° for medium-rare.
  • Allow the steak to rest for several minutes before slicing and serving.

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