London Broil With Onions

Prep: 480 min Cook: 20 min Serves: 4 Cuisine: American

London Broil with onions offers tender, flavorful steak marinated in a tangy sauce, grilled to perfection, and topped with tender onions—ideal for a hearty, savory meal.

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Ingredients

  • 1 1/2 lb. round steak or flank steak
  • 1/3 c. wine vinegar
  • 1/3 c. oil
  • 3 Tbsp. brown sugar
  • 2 medium onions, sliced
  • 1 clove garlic, crushed
  • 1/2 tsp. coarsely ground pepper
  • 3 Tbsp. soy sauce

Instructions

  1. Place steak in a shallow glass dish.
  2. Mix wine vinegar, oil, brown sugar, crushed garlic, ground pepper, and soy sauce. Pour over the steak.
  3. Cover the dish with plastic wrap and refrigerate for 8 hours or overnight, turning occasionally.
  4. Remove the steak from the marinade and grill 2 inches from medium coals until medium rare.
  5. Meanwhile, put onions into the marinade in a saucepan and bring to a boil, then simmer until onions are tender.
  6. Slice the cooked meat across the grain into thin slices.
  7. Top the sliced meat with the cooked onions and serve.

Tips & Substitutions

For the best flavor, marinate the steak overnight to allow the spices to penetrate. You can substitute red wine vinegar for wine vinegar for a deeper flavor. If you prefer less sweetness, reduce the brown sugar to 2 tablespoons. When grilling, use a meat thermometer to check for doneness; medium rare is typically at 135°F.

Serving Suggestions

Serve the London Broil sliced against the grain and topped with the tender onions. This dish pairs beautifully with a side of roasted vegetables or a fresh salad. For a complete meal, consider serving it alongside California Rice Dish for a hearty addition.

Storage & Reheating

Store leftover London Broil in an airtight container in the refrigerator for up to 3 days. To reheat, gently warm the slices in a skillet over low heat or microwave in short bursts to avoid drying out the meat. Serve with fresh onions to revive flavors.

Nutrition & Diet Analysis (per serving)

Each serving of London Broil With Onions contains roughly 1788 calories, with 4g protein, 67g carbohydrates, and 172g fat. It is a good source of dietary fiber (19% of the Daily Value), iron (14% of the Daily Value), and calcium (11% of the Daily Value). Note that it is relatively high in sodium, at 829mg per serving (36% of the Daily Value).

1788 kcal 89% DV
Protein Fat Carbs

Macronutrients

Protein 3.7g 7% DV
Total Fat 172.5g 100% DV
Carbs 66.8g 24% DV
Fiber 5.4g 19% DV
Sugar 49.4g 99% DV

Electrolytes

Sodium 829mg 36% DV
Potassium 409.5mg 9% DV
Cholesterol 0.6mg

Vitamins & Minerals

Vitamin A 5.4mcg 1% DV
Vitamin C 0.5mg 1% DV
Calcium 138mg 11% DV
Iron 2.6mg 14% DV
Diet fit High-fiber
Contains Soy

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use a different cut of beef for this recipe?

Yes, you can use other cuts like sirloin or ribeye, but cooking times may vary. Just ensure the meat is marinated adequately to enhance tenderness and flavor.

What can I serve with London Broil?

London Broil is versatile and pairs well with various sides. Consider serving it with mashed potatoes, a fresh green salad, or grilled vegetables for a balanced meal.

How do I know when the steak is cooked to medium rare?

For medium rare, the internal temperature should reach 135°F. You can use a meat thermometer for accuracy, or press the steak with your finger; it should feel slightly firm but still springy.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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