Slow Cooker London Broil

Slow Cooker London Broil is one of those comforting dinners that turns an affordable cut of beef into a meal everyone looks forward to. The long, gentle cooking process creates fork-tender London broil with a rich, flavorful broth that’s perfect for spooning over mashed potatoes, egg noodles, or rice. Whether you’re feeding the family on a busy weeknight or making a cozy Sunday dinner, this slow cooker London broil recipe delivers big flavor with very little hands-on time.

Slow Cooker London Broil on a plate
Substitutions and variations:

London broil isn’t always a specific cut of beef. It may be top round steak, flank steak, bottom round, or another good cut of meat that’s labeled as London broil.
Replace the ketchup with tomato paste if you’d like a richer tomato flavor.
Instead of red wine vinegar, use a splash of red wine or tart cherry juice.
Add red potatoes or sweet potatoes directly to the slow cooker for a complete meal.
You can also add brown sugar if you prefer a slightly sweeter gravy.

Can I skip searing?

You can, but seared meat develops much richer flavor. It’s worth the extra few minutes.

What should I serve with my London Broil?

Mashed potatoes, egg noodles, rice, Crusty bread or dinner rolls

Ingredient Notes

ingredients for Slow Cooker London Broil
  • London Broil: The star of the recipe that becomes tender through slow cooking.
  • Vegetable Oil: Used to create a flavorful crust while searing.
  • Onions: Add sweetness and depth to the broth.
  • Baby Carrots: Cook until perfectly tender alongside the roast.
  • Garlic: Adds rich savory flavor.
  • Beef Broth: Creates the base of the flavorful cooking liquid.
  • Ketchup: Adds tomato richness and slight sweetness.
  • Red Wine Vinegar: Brightens and balances the rich flavors.
  • Worcestershire Sauce: Adds deep savory flavor.
  • Cornstarch: Thickens the cooking liquid into a light gravy.
  • Italian Seasoning: Brings classic herb flavor.
  • Cayenne Pepper: Adds just a touch of warmth.
  • Salt & Black Pepper: Season the roast and sauce.
  • Bay Leaf: Infuses the broth with extra flavor during cooking.
  • Fresh Parsley: Adds freshness before serving.
  • Mashed Potatoes or Egg Noodles: Perfect for soaking up every bit of the savory gravy.
Slow Cooker London Broil in a crockpot

Slow Cooker London Broil

  1. Pat the roast dry with a paper towel and season with salt and black pepper. Heat vegetable oil in a large skillet over medium-high heat. Sear the beef for 3 to 5 minutes per side until browned. This extra step creates the best results by building flavor before slow cooking London broil.searing meat in a pan
  2. Place London broil into your 6-quart slow cooker.seared meat placed in crockpot
  3. Add the sliced onions, carrots, and garlic around the roast.carrots onion and garlic added to slow cooker
  4. In a small bowl, whisk together the cup of beef broth, ketchup, red wine vinegar, Worcestershire sauce, cornstarch, Italian seasoning, cayenne, salt, and pepper.beef broth, ketchup, red wine vinegar, Worcestershire sauce, cornstarch, Italian seasoning, cayenne, salt, and pepper in a small bowl
  5. Pour the sauce over the top of the meat and add the bay leaf.sauce added to slow cooker and bay leaf added
  6. Cover and cook on low for 6 to 8 hours, or until the roast is fork tender.slow cooker London broil in a crockpot
  7. Slice against the grain or shred the beef, then spoon the flavorful broth over the top before serving.sliced beef on a cutting board
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Slow Cooker London Broil

Slow Cooker London Broil is one of those comforting dinners that turns an affordable cut of beef into a meal everyone looks forward to.
Prep Time 20 minutes
Cook Time 6 hours
Total Time 6 hours 20 minutes

Equipment

Ingredients
 

  • 2.25 lb London broil
  • 2 tablespoons vegetable oil to sear beef
  • 2 medium onions sliced
  • 2 cups baby carrots
  • 4 garlic cloves minced
  • 1 cup beef broth
  • 3 tablespoons ketchup
  • 2 tablespoons red wine vinegar
  • 2 tablespoons Worcestershire sauce
  • 1 tablespoon cornstarch
  • 1 teaspoon Italian seasoning
  • ΒΌ teaspoon cayenne pepper
  • Salt and pepper to taste
  • 1 bay leaf
  • Fresh chopped parsley for topping

Instructions

  • Pat the roast dry with a paper towel and season with salt and black pepper. Heat vegetable oil in a large skillet over medium-high heat. Sear the beef for 3 to 5 minutes per side until browned. This extra step creates the best results by building flavor before slow cooking London broil.
    searing meat in a pan
  • Place London broil into your 6-quart slow cooker.
    seared meat placed in crockpot
  • Add the sliced onions, carrots, and garlic around the roast.
    carrots onion and garlic added to slow cooker
  • In a small bowl, whisk together the cup of beef broth, ketchup, red wine vinegar, Worcestershire sauce, cornstarch, Italian seasoning, cayenne, salt, and pepper.
    beef broth, ketchup, red wine vinegar, Worcestershire sauce, cornstarch, Italian seasoning, cayenne, salt, and pepper in a small bowl
  • Pour the sauce over the top of the meat and add the bay leaf.
    sauce added to slow cooker and bay leaf added
  • Cover and cook on low for 6 to 8 hours, or until the roast is fork tender.
    slow cooker London broil in a crockpot
  • Slice against the grain or shred the beef, then spoon the flavorful broth over the top before serving.

Nutrition

Calories: 311kcal | Carbohydrates: 11g | Protein: 41g | Fat: 10g | Saturated Fat: 3g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 3g | Trans Fat: 0.03g | Cholesterol: 104mg | Sodium: 367mg | Potassium: 872mg | Fiber: 2g | Sugar: 5g | Vitamin A: 5930IU | Vitamin C: 5mg | Calcium: 78mg | Iron: 4mg

Nutritional Disclaimer: Family Fresh Meals is not a dietician or nutritionist, and any nutritional information shared is only an estimate. We recommend running the ingredients through an online nutritional calculator if you need to verify any information.

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