In a medium-sized mixing bowl, whisk together Old Bay seasoning, parsley, baking powder, dijon mustard, Worcestershire sauce, tartar sauce, egg, and lemon. Then add the crab and panko bread crumbs.
Cover and refrigerate for 30 minutes.
Preheat the oven to 425℉ and form the crab mixture into 4 large, even sized balls. Place on a lightly greased baking sheet and bake for 12 minutes. Remove the crab cakes and preheat the broiler to high, broil for 1-2 minutes until golden.
Serve the crab cakes with lemon wedges and sauce below. Garnish with fresh parsley if desired.
Sauce
In a small bowl, whisk together the tartar sauce, Old Bay seasoning, lemon juice, and Worcestershire sauce.