Roast Beef Subs with Balsamic Onions and Brie Cheese

Details

Ingredients

• 1 pound top round beef, cut into 1-inch pieces
• 1 tablespoon Worcestershire sauce
• 2 teaspoons Montreal steak seasoning
• 1 tablespoon extra-virgin olive oil
• 2 small sweet onions, sliced
• ⅓ cup balsamic vinegar
• ¼ teaspoon salt
• ¼ teaspoon cracked black pepper
• 1 teaspoon canola oil
• 4 (6 inch) submarine sandwich roll, split
• 6 ounces Brie cheese, torn into pieces