This oven-roasted haddock with garlic and herbs is the kind of low-effort, high-reward dinner that delivers flaky fish, bright lemon, and savory garlic in under 20 minutes. It’s simple enough for busy weeknights, but polished enough to serve to guests.
Why you’ll love this oven-roasted haddock
- Fast: Cooks quickly at a high temperature for tender, flaky results.
- Flavorful: Garlic, herbs, lemon, and olive oil do all the work.
- Healthy: Lean protein with a light, fresh finish.
- Reliable: Clear timing cues so you don’t overcook the fish.
Ingredients you’ll need
- Haddock fillets (about 1 to 1 1/2 inches thick is ideal)
- Olive oil (or melted butter for a richer flavor)
- Garlic (freshly minced)
- Lemon (zest and juice)
- Fresh herbs (parsley and dill are great; thyme works too)
- Kosher salt
- Black pepper
- Optional: paprika for color, red pepper flakes for heat
How to make oven-roasted haddock
This method is all about high heat and a simple garlic-herb topping that keeps the fish moist.
- Preheat the oven: Heat to 425°F. Lightly oil a baking dish or line a sheet pan with parchment for easy cleanup.
- Pat the fish dry: This helps the surface roast instead of steaming.
- Mix the topping: Stir olive oil, minced garlic, lemon zest, chopped herbs, salt, pepper (and paprika if using).
- Season and roast: Place haddock in the dish, spoon the garlic-herb mixture over the top, and roast until the fish flakes easily.
- Finish with lemon: Squeeze fresh lemon juice over the fish right before serving.
Timing: how long to roast haddock
Cook time depends on thickness. A good rule is 10 minutes per inch of thickness at 425°F, but always use visual cues.
- Typical range: 10–14 minutes for most fillets.
- How to tell it’s done: The fish turns opaque and flakes cleanly with a fork.
- Temperature guide: If using a thermometer, aim for 135–140°F in the thickest part, then rest briefly (it will climb closer to 145°F).
Tips for the best results
- Don’t skip drying the fish: It prevents watery pan juices.
- Use fresh garlic and lemon: They make the flavor pop.
- Avoid overbaking: Haddock is lean and can dry out if pushed too far.
- Even thickness helps: If one end is much thinner, tuck it under for more even cooking.
Easy variations
- Parmesan-herb crust: Sprinkle 2–3 tablespoons grated Parmesan over the top for the last 3 minutes of roasting.
- Crunchy breadcrumb topping: Mix panko with olive oil, garlic, parsley, and lemon zest; add on top before baking.
- Spicy lemon-garlic: Add red pepper flakes and a pinch of smoked paprika.
- Butter version: Swap olive oil for melted butter for a richer, classic baked-fish flavor.
What to serve with it
- Roasted asparagus, broccoli, or green beans
- Rice pilaf, quinoa, or couscous
- Roasted baby potatoes or mashed potatoes
- A simple side salad with a lemony vinaigrette
Storage and reheating
- Refrigerate: Store leftovers in an airtight container for up to 2 days.
- Reheat gently: Warm in a 300°F oven just until heated through to avoid drying out.
- Leftover idea: Flake into a salad, tuck into tacos, or mix into a lemony pasta.
FAQ
- Can I use frozen haddock? Yes—thaw fully in the fridge, then pat very dry before seasoning and roasting.
- Can I use another white fish? Absolutely. Cod, pollock, or halibut work well; adjust cook time based on thickness.
- Do I need to flip the fillets? No. Roasting uncovered at high heat cooks evenly without flipping.
