Grilled London Broil With Caramelized Onions Recipe - Food.com

Ingredients

• 4 lbs london broil beef
• 1/2 cup ketchup
• 1/3 cup vinegar
• 1/4 cup oil
• 3 tablespoons mustard
• 3 tablespoons soy sauce
• 3 tablespoons Worcestershire sauce
• 1 tablespoon grated horseradish
• 2 tablespoons honey
• 1 teaspoon grated ginger
• 3 garlic cloves, minced
• 1 teaspoon black pepper
• 1 teaspoon onion powder
• 1 tablespoon dried parsley flakes
• caramelized onion (<a href="https://www.food.com/recipe/caramelized-onions-51649">Flavored Caramelized Onions</a>) (optional)