Ingredient:

• 2 medium potatoes, peeled and cut into 1-inch pieces
• 3 medium carrots, cut into 1-inch slices
• 1 medium onion, chopped
• 1 celery rib, diced
• 2 tablespoons butter
• 1 tablespoon olive oil
• 6 tablespoons all-purpose flour
• 3 cups chicken broth
• 4 cups cubed cooked turkey
• 2/3 cup frozen peas
• 1/2 cup plus 1 tablespoon heavy whipping cream, divided
• 1 tablespoon minced fresh parsley
• 1 teaspoon garlic salt
• 1/4 teaspoon pepper
• 2 sheets refrigerated pie crust
• 1 large egg