imperial crab casserole

Ingredients

• 1/2 cup unsalted butter, melted
• 3 tablespoons all purpose flour
• 2 cups heavy cream or evaporated milk
• 1 pound jumbo lump crabmeat, shell pieces removed
• 1 cup panko bread crumbs
• 1/2 cup red bell pepper, chopped fine
• 1/4 cup yellow onion, chopped fine
• 1/4 cup finely chopped parsley
• 2 tablespoons each sherry and fresh lemon juice
• 1 1/2 teaspoons worcestershire
• 1 teaspoon each paprika and ground mustard powder
• 1/2 teaspoon cayenne pepper, optional
• - kosher salt and ground black pepper to taste