Delicious Chinese-inspired pie with a flaky crust

Ingredients

• 1 lb ground pork
• 1 onion, diced
• 2 cloves garlic, minced
• 1 tsp ginger, grated
• 1/4 cup soy sauce
• 1/4 cup oyster sauce
• 1/4 cup hoisin sauce
• 1 cup frozen mixed vegetables
• 1 refrigerated pie crust
• 1 egg, beaten