Creating baked stuffed crab shells is a straightforward process that results in a deliciously satisfying dish. Follow these steps to achieve perfection:

1. Prepare the Crab Meat: Start by ensuring that your crab meat is free of shells. Gently pick through it and set it aside.
2. Sauté Vegetables: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the chopped onion, garlic, bell pepper, and celery. Sauté until the vegetables are soft and fragrant, about 5 minutes.
3. Mix Ingredients: In a large mixing bowl, combine the sautéed vegetables with the crab meat, breadcrumbs, mayonnaise, beaten egg, lemon juice, Worcestershire sauce, cayenne pepper, salt, black pepper, and parsley. Mix gently to avoid breaking up the crab meat.
4. Fill the Shells: Preheat your oven to 350°F (175°C). Carefully spoon the crab mixture into the prepared crab shells or ramekins, pressing lightly to compact.
5. Top with Cheese: Drizzle the remaining melted butter over the top of each stuffed shell and sprinkle with grated Parmesan cheese.
6. Bake: Place the shells on a baking sheet and bake in the preheated oven for 20-25 minutes, or until the tops are golden brown and the filling is heated through.
7. Serve: Remove from the oven and let cool slightly before serving.