Description

London broil marinade is a bold, flavor-packed blend of Dijon mustard, brown sugar, citrus, garlic, and umami-rich sauces that tenderizes and transforms tough cuts into juicy, restaurant-quality steak perfect for weeknight dinners or weekend grilling. Easily made gluten-free or low-sodium.

Ingredients

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Instructions

Score the meat: On a cutting board, use a sharp knife to make ¼-inch-deep cuts ¾ inch apart in a crisscross pattern on both sides of the steak.
In a small bowl, whisk together Dijon mustard, brown sugar, orange juice, soy sauce, fish sauce, ginger, garlic, and red pepper flakes until smooth.
Place London broil in a gallon-sized zip-top bag or shallow dish. Pour marinade over meat, ensuring full coverage.
Seal bag (or cover dish) and refrigerate for at least 3 hours or up to 24 hours.
When ready to cook, preheat broiler to 500°F (260°C). Place a cast-iron skillet on the top oven rack to heat.
Carefully place marinated steak in the hot skillet. Broil for 4 minutes per side (8 minutes total) for medium-rare.
Transfer to a cutting board and let rest for 5–10 minutes.
Slice thinly against the grain and serve warm.

Notes

– Scoring helps marinade penetrate deeply for better flavor and tenderness.

– Don’t skip resting it keeps the meat juicy.

– Gluten-free: Use tamari instead of soy sauce and ensure Worcestershire is GF if substituting.

– Low-sodium: Reduce soy and fish sauce by half; add extra orange juice or a splash of apple cider vinegar.

– Grill option: Cook over high heat for 4–5 minutes per side.

– Marinade doubles as a baste spoon over meat during last minute of cooking if desired.

Prep Time: 10 minutes (+ 3–24 hours marinating)
Cook Time: 8 minutes
Category: Main Course / Marinade
Method: Broiling / Grilling
Cuisine: American

Nutrition

Serving Size: 1 serving (5 oz cooked steak with marinade)
Calories: ~280
Sugar: 8g
Sodium: 720mg (varies with soy/fish sauce)
Fat: 10g
Saturated Fat: 3g
Unsaturated Fat: 6g
Trans Fat: 0g
Carbohydrates: 12g
Fiber: 0.5g
Protein: 34g
Cholesterol: 90mg