Step 1: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or foil, and for extra crispiness, place a wire rack on top and lightly spray with cooking spray.
Step 2: Pat the cod fillets very dry with paper towels. Removing excess moisture is crucial for a crispy crust. Repeat with fresh paper towels if necessary until the fish feels dry to the touch.
Step 3: In a shallow dish, whisk together the egg and Dijon mustard (if using).
Step 4: In another shallow dish, combine the panko breadcrumbs, grated Parmesan cheese, garlic powder, onion powder, dried Italian herbs, salt, and black pepper. Mix thoroughly until all ingredients are well combined.
Step 5: Dip one cod fillet into the egg wash, ensuring it is fully coated, then let any excess egg drip off.
Step 6: Immediately transfer the egg-coated fillet to the panko-Parmesan mixture. Press the breading firmly onto both sides of the fish, ensuring a thick, even coating. Really pack it on!
Step 7: Place the breaded fillet on the prepared wire rack on the baking sheet. Repeat the breading process with the remaining cod fillets, leaving some space between each for air circulation.
Step 8: Lightly drizzle or spray the tops of the breaded cod fillets with olive oil. This helps achieve a beautiful golden-brown color and a perfectly crispy crust.
Step 9: Bake for 12-18 minutes, or until the cod is opaque, flakes easily with a fork, and the crust is golden brown and crispy. Cooking time may vary based on fillet thickness. Avoid overcooking.
Step 10: Carefully remove the baked cod from the oven. Serve immediately with fresh lemon wedges and a sprinkle of chopped parsley. Enjoy your crispy parmesan crusted cod golden winner!