Incredible Chicken Pot Pie Recipe

Ingredients

• 6 tablespoons unsalted butter
• 1 medium (diced) yellow onion
• 2 medium (peeled and diced) carrots
• 2 diced celery stalks
• 2 minced garlic cloves
• 1/3 cup all-purpose flour
• 2 cups chicken broth
• 1 cup whole milk
• 1 teaspoon dried thyme
• 1 teaspoon dried parsley
• 1 teaspoon (or to taste) salt
• 1/2 teaspoon (or to taste) black pepper
• 2 cups (shredded or diced) cooked chicken breast
• 1 cup frozen peas
• 1 cup frozen corn
• 2 sheets store-bought or homemade pie crust
• 1 large egg
• 1 tablespoon water