Flat Iron Steak Slow Cooker Recipe

Flat Iron Steak Slow Cooker recipe
Welcome to another sizzling post on our culinary adventures! Today, we have an exquisite, comforting delight that’s perfect for the upcoming cooler days or a relaxed weekend feast. Our star of the day is the Flat Iron Steak, an under-appreciated cut of beef that promises an explosion of flavors when cooked with love and patience. We’re about to share a foolproof recipe that transforms this modest piece of meat into a melt-in-your-mouth wonder using our trusty ally, the slow cooker. So, if you’ve been searching for a way to surprise your family or add a special touch to your weekend dinner, keep reading because this Flat Iron Steak Slow Cooker recipe is going to tick all your boxes.

Flat Iron Steak Slow Cooker Recipe


  • 1.5-2 pounds of flat iron steak
  • Salt and black pepper to taste
  • 1 tablespoon of olive oil
  • 4 cloves of garlic, minced
  • 1 medium onion, thinly sliced
  • 1 cup of beef broth
  • 1 tablespoon of Worcestershire sauce
  • 1 tablespoon of soy sauce
  • 1 teaspoon of dried rosemary
  • 1 teaspoon of dried thyme
  • 2 tablespoons of cornstarch mixed with 2 tablespoons of water (optional, for gravy)


1. First, season the flat iron steak on both sides with salt and pepper.

2. Heat the olive oil in a large skillet over medium-high heat. Add the steak and sear it on both sides until it gets a nice brown crust. This should take about 3-4 minutes per side.

3. Place the sliced onion and minced garlic at the bottom of the slow cooker. This will create a flavorful bed for your steak.

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4. Once seared, transfer the steak to the slow cooker, laying it on top of the onion and garlic.

5. In the same skillet you used for the steak, add the beef broth, Worcestershire sauce, and soy sauce. Stir well, making sure to scrape off any bits stuck to the pan.

6. Pour this mixture over the steak in the slow cooker. Sprinkle the dried rosemary and thyme over the top.

7. Cover and cook on low for 6-7 hours, or until the steak is tender and easily falls apart with a fork.

8. If you prefer a thicker gravy, remove about a cup of the liquid from the slow cooker near the end of the cooking time, mix it with the cornstarch-water slurry, and then stir it back into the slow cooker. Let it cook for an additional 20-30 minutes until the gravy thickens.

9. Serve your mouthwatering flat iron steak with your favorite sides. It pairs perfectly with mashed potatoes, roasted veggies, or a fresh salad.

And there you have it – an effortlessly delicious Flat Iron Steak Slow Cooker recipe that’s perfect for those busy weekdays, relaxed weekends, or whenever you’re in the mood for a comforting, home-cooked meal.

Not only is this dish impressive in flavor, but it also celebrates the humble flat iron steak, showing us that with a bit of time and the right ingredients, every cut of meat can become a showstopper.

I hope you try this recipe out and enjoy it as much as we do. Don’t forget to share your culinary creations with us in the comments below. Happy slow cooking!

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