Haddock is a fish that bakes relatively quickly, even if your pieces are relatively large. But the bake time for haddock will vary slightly depending on your oven temperature.
- 425 degrees: 10 to 12 minutes
- 400 degrees: 12 to 15 minutes
- 375 degrees: 15 to 20 minutes
- 350 degrees: 20 to 25 minutes
You can be sure your haddock is fully baked when it looks opaque and flakes easily when you test it with a fork. But if you want a little reassurance, stick a meat thermometer into the thickest part of your fish: When it reaches an internal temperature of 145 degrees, then your fish is ready to serve.