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5 from 2 votes

Slow Cooker London Broil

This London Broil is cooked in the crock pot for a delicious pot-roast style meal! It only takes 10 minutes of prep before the slow cooker works its magic. Add potatoes or vegetables to this recipe to make a delicious one-pot meal!
Prep Time15 mins
Cook Time6 hrs
Total Time6 hrs 15 mins
Course: dinner, Main Course
Cuisine: American
Keyword: london broil crock pot, london broil slow cooker
Author: TipBuzz


  • 3 pounds London broil see note
  • 1 tablespoon canola oil
  • 1 cup beef broth low-sodium recommended, or red wine or water
  • 1 teaspoon dried thyme or 4 sprigs fresh thyme
  • 1 teaspoon garlic powder or 2 teaspoons freshly minced garlic
  • 1 teaspoon salt or less if using regular broth
  • ½ teaspoon black pepper
  • 2 tablespoons butter

Optional Additions

  • 1 pound baby potatoes red or white (10-12 potatoes)
  • 3 medium carrots sliced
  • ½ pound green beans


  • Optional Searing: Place a cast iron skillet over high heat and let it heat up for 5 minutes until very hot. Add the oil and the beef. Let is sear undisturbed for 2 minutes to brown. Then flip and repeat for the other sides.
  • Place the London broil in the crock pot along with the broth, thyme, garlic, salt, pepper and butter. Then cover and seal the lid.
  • Cook on Low for 6-7 hours or alternatively on High for 3-4 hours. Add optional potatoes and carrots for the final hour, and green beans for the last 30 minutes.
  • Remove the roast to a carving board and slice against the grain. Serve with juices from the crock pot.


  • Serving: You may need to pass the juices through a sieve or strainer before serving.