01 - Preheat oven to 400°F. Line a baking tray with parchment paper or lightly grease a baking dish.
02 - Pat cod fillets dry with paper towels and place them evenly on the prepared tray or dish.
03 - In a bowl, combine melted butter, breadcrumbs, lemon zest, lemon juice, parsley, dill if using, minced garlic, salt, and black pepper. Mix until uniformly combined and crumbly.
04 - Evenly spoon crumb mixture over each cod fillet, gently pressing to adhere.
05 - Bake for 15 to 20 minutes, until cod is opaque and flakes easily, and crumb topping turns golden brown.
06 - Remove from oven, garnish with additional parsley and lemon wedges if desired, and serve immediately.