Creating the delicious Baked Pesto Cod with Potatoes is straightforward. Follow these simple steps for a delightful meal:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare the Potatoes: In a large bowl, toss the halved potatoes with olive oil, salt, and pepper until evenly coated.
3. Arrange in Pan: Spread the potatoes in a single layer in a large baking dish. Make sure they are evenly spaced for optimal roasting.
4. Bake Potatoes First: Place the dish in the preheated oven and bake the potatoes for 15 minutes.
5. Add Cod and Pesto: After 15 minutes, remove the dish from the oven. Nestle the cod fillets among the potatoes. Spoon the pesto over each fillet, ensuring they are well coated.
6. Bake Again: Return the pan to the oven and bake for an additional 15 to 20 minutes, or until the cod is flaky and cooked through.
7. Check for Doneness: Ensure the internal temperature of the cod reaches 145°F (63°C).
8. Serve and Enjoy: Remove the dish from the oven and let it cool for a few moments before serving. Enjoy your delicious one-pan meal with your family or guests!