Baked Haddock with Onions and Herbs

Use all your knife skills to make this baked haddock with chopped onions and herbs. Our Knife Skills series is sponsored by Cutco.

Baked Haddock with Herbs and Onion

Put your knife skills to the test! We’ve been explaining and showing you how to get the most out of your knives and now we’re going to challenge you to pull all those skills together.

What Knife Skills Do I Need?

Did you miss some of our knife skills lessons? Here are our guides on how to cut an onion, how to chop herbs and how to skin a fish fillet.

Now that we’ve looked back over our notes, let’s get started.

How to Cook Haddock

This recipe is really simple to put together and the chopped onions and dill add a great flavor to the haddock. So so delicious.

Start by preheating your oven to 425°F and placing your fish (skin removed) on a sheet pan lined with foil. Pour melted butter with chopped onion over the fish and sprinkle with salt and pepper. Bake until cooked through and flaky, about 10 minutes. Finally, top with fresh dill and lemon slices. It’s just that easy!

What to Serve with Baked Fish

A simple tossed salad is always a great pairing! These green beans bring out the lemon flavor and cook at the same temperature as the haddock, but you’ll want to start them before the fish. Or break out the air fryer and roast some delicious broccoli.



Baked Haddock with Onions, Herbs and Lemon

Use all your knife skills to make this baked haddock with chopped onions and herbs.

  • Author: Christine Pittman
  • Prep Time: 5 minutes
  • Cook Time: 10 minutes
  • Total Time: 15 minutes
  • Yield: 4 servings


  • 1 lb. haddock fillet, skin removed (here’s how to do it)
  • 2 Tbsp. butter, melted
  • 2 Tbsp. chopped onion
  • salt
  • pepper
  • 2 Tbsp. chopped dill
  • lemon slices


  1. Preheat your oven to 425°F and line a baking sheet with aluminum foil. Place fish on sheet pan.
  2. In small bowl, combine melted butter and onion. Pour over fish and sprinkle lightly with salt and pepper. Bake in oven until cooked through and the fish flakes apart, about 10 minutes.
  3. Top the fish with chopped dill and lemon slices to serve.


Disclosure: This article is sponsored by Cutco. All opinions are ours and honest.
This post originally appeared in October 2016 and was revised and republished in March 2020.

Baked Haddock with Onions and Herbs
Baked Haddock with Onions and Herbs

Christine Pittman

Christine is the Senior Editor and Owner of The Cookful and of COOKtheSTORY and of the podcast Time Management Insider. Her sites reach over 2 million readers per month, which means that things can get a bit crazy. She's constantly writing, taking pictures, editing, recording, interviewing, managing contributors, and, oh yeah, cooking. To say that she wears many hats is an understatement - there are many hats, and also many shirts, shoes, pants, and even the odd cape!