Le Gruyère® Pork & Mushroom Pie - Emmi USA

Ingredients

• 1 tablespoon olive oil
• 1 pound ground pork
• Salt and black pepper
• 1 large onion, diced
• 2 stalks celery, diced
• 10 ounces button or cremini mushrooms, chopped
• 1/4 cup dry white wine, such as Sauvignon Blanc
• 1 tablespoon flour
• 2 cups (8 ounces) shredded Emmi Le Gruyère® AOP
• 1 egg
• 1 18-ounce package (2 sheets) puff pastry, thawed according to package directions
• Dijon mustard, optional
• Parsley leaves, optional