Description

This Slow Cooker London Broil recipe features tender, flavorful beef marinated in a savory blend of soy sauce, balsamic vinegar, and Worcestershire sauce. Searing the meat before slow cooking ensures a rich, caramelized crust, while slow cooking with vegetables like carrots, potatoes, onion, and garlic results in a hearty, comforting meal perfect for any occasion.

Ingredients

Scale

Marinade

2 pounds London broil
¼ cup low-sodium soy sauce
1 Tbsp. balsamic vinegar
1 Tbsp. Worcestershire sauce
¾ cup beef broth (from 1 ¾ cup total)
1 Tbsp. brown sugar
½ tsp. dried rosemary
½ tsp. dried thyme
¼ tsp. black pepper
1 Tbsp. olive oil

Vegetables & Additions

1 medium onion, sliced
2 carrots, peeled and cut into chunks
2 potatoes, cut into chunks
4 garlic cloves
1 cup beef broth (remaining from 1 ¾ cup total)
1 Tbsp. cornstarch (optional, for thickening)

Instructions

Prepare the Marinade: In a medium bowl, whisk together the soy sauce, balsamic vinegar, Worcestershire sauce, ¾ cup of beef broth, brown sugar, dried rosemary, dried thyme, black pepper, and olive oil until well combined.
Marinate the Meat: Place the London broil in a resealable plastic bag or shallow dish and pour the marinade over it. Ensure the meat is evenly coated, seal the bag or cover the dish, and refrigerate for at least 4 hours, preferably overnight, to allow the flavors to penetrate the meat.
Sear the Meat: After marinating, heat a skillet over medium-high heat. Sear the London broil on all sides for 2-3 minutes per side to develop a flavorful crust. Then transfer it to the slow cooker.
Add Vegetables: Arrange the sliced onion, carrot chunks, potato chunks, and garlic cloves around the London broil inside the slow cooker.
Add Broth: Pour the remaining 1 cup of beef broth over the meat and vegetables, so the liquid comes about halfway up the sides of the meat.
Slow Cook: Cover the slow cooker and cook on low for 6-8 hours, or until the meat is fork-tender and vegetables are cooked through.
Rest and Slice: Carefully remove the London broil from the slow cooker and let it rest for 10-15 minutes before slicing thinly against the grain.
Make the Sauce (Optional): Strain the cooking liquid into a saucepan. In a small bowl, mix the cornstarch with a few tablespoons of cold water to form a slurry. Bring the strained liquid to a boil, stir in the slurry, and cook until the sauce thickens.
Serve: Plate the sliced London broil with the cooked vegetables and drizzle with the thickened savory sauce. Enjoy your hearty slow cooker meal!

Notes

Marinating overnight enhances flavor and tenderness.
Searing the meat before slow cooking locks in juices and adds depth of flavor.
Use low-sodium soy sauce to control salt content.
Cornstarch slurry helps thicken the sauce but is optional.
Slice the meat against the grain for maximum tenderness.
Vegetables can be adjusted based on preference or seasonal availability.
Cook times may vary slightly depending on your slow cooker model.

Prep Time: 15 minutes
Cook Time: 6-8 hours
Category: Main Course
Method: Slow Cooking
Cuisine: American

Keywords: slow cooker London broil, slow cooker beef, marinated beef recipe, easy slow cooker meals, tender beef recipe, comfort food, one pot dinner