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How To Make London Broil In Slow Cooker – Great Meal Recipes

Name: How To Make London Broil In Slow Cooker – Great Meal Recipes
Prep time: 10 min
Cook time: 3 h 15 min
Total time: 3 h 25 min
Yield: 5
Ingredients: 2 cloves garlic, minced; 1 cup rich beef stock; 2 tablespoons extra virgin olive oil; 1½ pounds small new potatoes1 dried bay leaf; 1 packet savory onion soup seasoning; 1 cup filtered water; 2.5-3 pounds flank steak; 1 tablespoon cold water; Kosher salt, adjusted to preference; 1 tablespoon cornstarch; Freshly ground black pepper, to taste; 1¾ pound carrots, chopped into 1 ½–2 inch pieces; 1 teaspoon fresh thyme leaves

Barbara Brito August 8, 2025

Servings: 5 Total Time: 3 hrs 25 mins Difficulty: Intermediate

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Ah, London Broil – it’s one of those meals that can make any dinner feel special without requiring a culinary degree. I remember when I first tried it; the juicy, tender slices of beef sat alongside perfectly cooked vegetables.

I’ve since learned that the slow cooker is a fantastic way to prepare this delicious dish. Not only does it transform the meat into a tender masterpiece, but it also allows me to enjoy more free time. Let’s jump into this journey on how to make London Broil in a slow cooker, shall we?

What is London Broil in Slow Cooker?

London Broil traditionally refers to a cut of flank or round steak, which is marinated and then grilled or broiled. In this method, however, the slow cooker does the heavy lifting.

The steak simmers while soaking up delicious flavors from the marinade and accompanying vegetables. The result? A dish so tender, you could cut it with a fork. Plus, the slow cooking process melds all the flavors beautifully.

Why You’ll Love This London Broil Recipe

When I think about comfort food, London Broil checks all the boxes. First, it’s a budget-friendly meal that doesn’t sacrifice flavor. Second, using the slow cooker means I don’t have to hover over the stove, allowing me to multitask.

Third, the leftovers (if there are any) make for hearty sandwiches or salads. If that doesn’t win you over, I don’t know what will!

The Ingredients

2 cloves garlic, minced

1 cup rich beef stock

2 tablespoons extra virgin olive oil

1 ½ pounds small new potatoes1 dried bay leaf

1 packet savory onion soup seasoning

1 cup filtered water

2.5-3 pounds flank steak

1 tablespoon cold water

Kosher salt, adjusted to preference

1 tablespoon cornstarch

Freshly ground black pepper, to taste

¾ pound carrots, chopped into 1 ½–2 inch pieces

1 teaspoon fresh thyme leaves

Step by Step Instructions

Step 1: Prep the Flank Steak

Start by trimming any excess fat from your flank steak. This will enhance the tenderness and flavor of the dish.

Next, sprinkle both sides of the steak generously with Kosher salt and freshly ground black pepper. Let it sit for about 10-15 minutes to bring the flavor to the forefront.

Step 2: Sauté the Aromatics

In a skillet over medium heat, add the extra virgin olive oil. Once it’s hot, throw in the minced garlic. Sauté until fragrant; you know you’ve hit the sweet spot when the kitchen starts smelling like a garlic lover’s dream.

This only takes a minute or two—watch that it doesn’t burn!

Step 3: Layer the Ingredients in the Slow Cooker

Place your flank steak at the bottom of the slow cooker. Next, add in the sautéed garlic from the skillet. Then pile on the chopped carrots and new potatoes.

Don’t forget that dried bay leaf; it adds a subtle earthy flavor to the mix!

Step 4: Add Liquids and Seasonings

Pour the beef stock and the filtered water over the meat and vegetables. The liquids will help break down the meat during the slow cooking process, turning it into a tender masterpiece.

Next, open that packet of savory onion soup seasoning and sprinkle it generously over everything. It’s like giving the dish a warm hug.

Step 5: Slow Cook to Perfection

Cover the slow cooker with its lid and set it to low. Let it cook for 6-8 hours. The longer, the better! If you’re in a rush, you can set it on high for about 4-5 hours.

But honestly, patience rewards you with more tender meat.

Step 6: Thicken the Sauce

Once the cooking time is up, carefully remove the flank steak and let it rest on a cutting board for about 10 minutes. Meanwhile, in a small bowl, mix the tablespoon of cold water with cornstarch.

Stir this mixture into the remaining liquid in the slow cooker, letting it thicken into a wonderful sauce.

Step 7: Slice and Serve

After resting, slice the flank steak against the grain. Serve it with the luscious sauce drizzled over. Don’t forget to add those tender vegetables alongside!

How To Make London Broil In Slow Cooker Recipe

Tips & Tricks

Now that you’ve got the basic steps down, let’s jazz it up with some tips:

Marinate for Extra Flavor: If time allows, marinating the flank steak in your favorite marinade overnight can add incredible depth to the flavor.
Adjust the Veggies: Feel free to toss in other vegetables like bell peppers or mushrooms for added nutrition and taste.
Make a Big Batch: This recipe easily scales. Double the ingredients if you’re planning for a gathering.
Experiment with Spices: Season with different herbs like rosemary or smoked paprika for a unique twist.
Save the Leftovers: The leftover meat is great for sandwiches, salads, or even as a pizza topping. Don’t let it go to waste!

Nutrition Information

How To Make London Broil In Slow Cooker Nutrition Facts

Can I Store London Broil Made in Slow Cooker?

Absolutely! If you’ve got leftovers (which I often do), let the beef and vegetables cool and then store them in an airtight container. It keeps well in the fridge for about 3-4 days.

Just reheat thoroughly before serving. You can even freeze portions for a future meal; they’ll stay fresh and tasty for about three months.

What Can I Serve with London Broil?

The beauty of this dish is its versatility. Here are some ideas to accompany your London Broil:

Mashed Potatoes: A creamy version works well to soak up the sauce.
Steamed Vegetables: Simple and nutritious; they complement the dish nicely.
Rice Pilaf: Fluffy rice can balance the richness of the beef.
Garlic Bread: A crunchy option to mop up all those delicious juices.
Salad: A fresh green salad adds a refreshing contrast.

Variations

Let’s spice things up a bit. Here are five variations to consider:

Asian-Inspired London Broil: Instead of beef stock, use soy sauce and add sesame oil, ginger, and green onions. It’s a game changer!
Italian Flavors: Toss in some chopped tomatoes, balsamic vinegar, and Italian seasoning for a Mediterranean twist.
Spicy Barbecue: Incorporate your favorite barbecue sauce instead of beef stock for a sweet and spicy kick.
Tex-Mex London Broil: Season with taco spices and add black beans and corn—delicious!
Beer-Braised Version: Use a bottle of your favorite stout or porter instead of broth. It adds richness that’s out of this world.

Conclusion

There you have it, my detailed journey into making a delicious London Broil in a slow cooker. With simple ingredients and straightforward steps, you’ll impress family and friends alike.

Every bite is a reminder that sometimes, simplicity is key. Whether you stick to the classic recipe or explore the variations, you’ll find there’s always room for a comforting meal in your life.

So go ahead, fire up that slow cooker and let the magic happen! It’s a reliable culinary hero that will make your kitchen feel warm and inviting—just like the meal itself. Happy cooking!

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How To Make London Broil In Slow Cooker – Great Meal Recipes

Author: Barbara Brito Cuisine: American Courses: Dinner

Difficulty: Intermediate Prep Time 10 mins Cook Time 195 mins Total Time 3 hrs 25 mins

Servings: 5 Calories: 845

Best Season: Suitable throughout the year

Description

London Broil traditionally refers to a cut of flank or round steak, which is marinated and then grilled or broiled. In this method, however, the slow cooker does the heavy lifting.