Grilled Steak Fajitas | Reader's Digest Canada

Ingredients

• 1 beef flank steak (1-1/2 pounds)
• 1 large onion (cut into wedges)
• 1 medium green pepper (julienned)
• 1 can chopped green chiles (4 ounces)
• 1/2 cup lemon juice
• 1/2 cup cider vinegar
• 1/2 cup vegetable oil
• 4 garlic cloves (minced)
• 1 tablespoon Worcestershire sauce
• 1 teaspoon dried oregano
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 12 flour tortillas (6 inches, warmed)
• 1 medium avocado (peeled and sliced, optional)
• sour cream (optional)