01 - Set the oven to 400°F and line a baking tray with parchment paper or lightly grease a baking dish.
02 - Pat the cod fillets dry using paper towels and place them evenly spaced on the prepared tray or dish.
03 - In a mixing bowl, mix melted butter, breadcrumbs, lemon zest, lemon juice, parsley, dill (if using), garlic, salt, and black pepper until the mixture forms a moist crumb texture.
04 - Spoon the crumb mixture evenly over each cod fillet, gently pressing to ensure it adheres well.
05 - Bake for 15 to 20 minutes until the cod is opaque, flakes easily with a fork, and the topping turns golden brown.
06 - Remove from oven, garnish with extra parsley and lemon wedges if desired, and serve immediately.