Flavor Packed London Broil Marinade Recipe

London broil, commonly made with flank steak, requires London broil marinade to add flavor and moistness. Other cuts that can be marinated and cooked with this beef marinade recipe are top round and tri tip roasts.

Making a Marinade For a Smoked London Broil Recipe

The trick to cooking these beef cuts is to bring them up to medium rare, and no more. Of course, after they reach the target temperature, it's important to let the meat rest for 20-30 minutes before slicing and serving.

Marinade Ingredients and Instructions


  • 1/4 cup lemon juice
  • 1/4 cup Worcestershire sauce
  • 2 tablespoons Heinz 57 sauce
  • 1 teaspoon season salt
  • 1 teaspoon onion powder
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon black pepper
  • 1/2 cup vegetable oil

Mix together all ingredients but the oil. Slowly add the oil, briskly mixing with a whisk to form an emulsion. Pour the beef marinade into a gallon food storage bag with the beef. Marinate for 4 to 6 hours before smoking or grilling.

London broil is best served medium rare. Use the following temperature chart for guidance.

Rare 130ºF Remove at 120-125ºF
Medium Rare 140ºF Remove at 130-135ºF
Medium 150ºF Remove at 140-145ºF
Medium Well 160ºF Remove at 150-155ºF
Well Done 170ºF Remove at 160-165ºF

Beef London Broil, Sliced On Serving Platter

After resting, slice the meat at an angle and across the grain for the ultimate in tenderness and flavor.