How do you know when cod is cooked through?
Cod is done when it flakes easily with a fork and reaches an internal temperature of 145°F (63°C). The flesh should be opaque throughout with no translucent center.
Can you make this dish ahead of time?
Yes. Assemble the vegetable base and prepare the crispy topping separately up to 8 hours ahead. Add the topping and bake just before serving for the crispiest texture.
What other white fish works instead of cod?
Halibut, haddock, sea bass, or mahi-mahi are good substitutes. Adjust baking time slightly based on fillet thickness—thinner fillets need 12-15 minutes, thicker ones 18-22 minutes.
Can you scale this recipe up for a crowd?
Yes. Double or triple the vegetables and topping, and use a larger sheet pan. Arrange cod fillets in a single layer without crowding; bake time may increase by 3-5 minutes depending on oven capacity.
Is this gluten-free?
Not as written because of the crackers and panko in the topping. Use gluten-free crackers and panko to make it gluten-free.