Finely grated zest of 1 orange (2½ tsp.), plus orange wedges for serving
Finely grated zest of 1 lemon (1½ tsp.), plus lemon wedges for serving
YIELD 4-6 servings
Preheat a broiler to its medium setting and line a baking sheet with foil. Grease the foil lightly with 1 tablespoon butter.
Season the fish all over with 1 tablespoon salt, then transfer to the prepared baking sheet. Set aside for 20 minutes.
Meanwhile, in a small bowl, stir together the panko, parsley, thyme, orange and lemon zests, 1 teaspoon kosher salt, and the remaining 6 tablespoons melted butter.
Sprinkle the panko topping over the fish, then broil until the topping is browned and the fish flakes when the center is poked with a fork, 8–10 minutes. Remove and serve immediately with the citrus wedges for squeezing.