Creamy Florida Shrimp Pie with Crispy Topping

Ingredients

• 1 lb fresh Gulf shrimp, peeled and chopped
• 1 tbsp unsalted butter
• 1 small onion, finely chopped
• 1 celery stalk, finely chopped
• 1 red bell pepper, finely chopped
• 2 cloves garlic, minced
• 1 tsp Old Bay seasoning
• 1/2 tsp smoked paprika
• 1/4 tsp cayenne pepper, optional
• Salt
• black pepper
• 1 tbsp all-purpose flour
• 1/2 cup heavy cream
• 1/2 cup whole milk
• 1 tsp Dijon mustard
• 1 tsp lemon zest
• 1/2 cup shredded white cheddar cheese
• 1/4 cup grated Parmesan cheese
• 1 9-inch pie crust, store-bought or homemade
• 1 egg, beaten (for egg wash)
• 1/2 cup panko breadcrumbs
• 1 tbsp melted butter
• 1 tbsp chopped fresh parsley
• 2 tbsp grated Parmesan cheese