Steak Kabob Marinade

Bahan-bahan (6 porsi)

• 1 ½ pounds strip loin (sirloin or ribeye steak)
• 2 red bell peppers (or green bell peppers)
• 1 large red onion
• 8 ounces mushrooms
• ¼ cup olive oil
• 2 tablespoons Worcestershire sauce
• 2 tablespoons soy sauce
• 1 tablespoon Dijon mustard
• 1 clove garlic (minced)
• 1 teaspoon black pepper
• ½ teaspoon dried rosemary (crushed, or 2 teaspoons fresh chopped rosemary)