Potato and Celery-Root Gratin with Smoked Haddock

Name: Potato and Celery-Root Gratin with Smoked Haddock
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 medium onions, halved lengthwise, thenthinly sliced lengthwise; 2 tablespoons unsalted butter; 1/2 lb smoked haddock fillet (finnan haddie), thawed if frozen, shredded with your fingers into 1/2-inch pieces, discarding any tough parts; 2 tablespoons chopped fresh parsley; 1 1/2 lb celery root (sometimes called celeriac), peeled with a knife; 2 lb large potatoes (preferably russet or Yukon Gold), peeled; 2 cups heavy cream; 1/2 cup whole milk; 1 teaspoon salt; 1/4 teaspoon black pepper; Special equipment: a Japanese Benriner* or other adjustable-blade slicer; a 13- by 9- by 2-inch or other shallow (2 1/2- to 3-quart) glass or ceramic baking dish

Servings: persons

2 medium onions, halved lengthwise, thenthinly sliced lengthwise
2 tablespoons unsalted butter
1/2 lb smoked haddock fillet (finnan haddie), thawed if frozen, shredded with your fingers into 1/2-inch pieces, discarding any tough parts
2 tablespoons chopped fresh parsley
1 1/2 lb celery root (sometimes called celeriac), peeled with a knife
2 lb large potatoes (preferably russet or Yukon Gold), peeled
2 cups heavy cream
1/2 cup whole milk
1 teaspoon salt
1/4 teaspoon black pepper
Special equipment: a Japanese Benriner* or other adjustable-blade slicer; a 13- by 9- by 2-inch or other shallow (2 1/2- to 3-quart) glass or ceramic baking dish

1
Preheat oven to 375F.
2
Cook onions in butter in a 12-inch heavy skillet over moderate heat, stirring occasionally, until softened and just beginning to brown, 7 to 8 minutes.
3
Remove skillet from heat and stir in haddock, 1 tablespoon parsley, and salt and pepper to taste.
4
Halve or quarter celery root to fit slicer.
5
Thinly slice potatoes and celery root (about 1/8-inch thick) with slicer.
6
Layer one third of potatoes and celery root in buttered baking dish.
7
Spread half of haddock mixture on top, then repeat layering with half of remaining vegetables, all of remaining haddock mixture, and then remaining vegetables.
8
Stir together cream, milk, salt, and pepper and pour on top of gratin, then cover dish tightly with buttered foil.
9
Bake gratin in middle of oven until vegetables are just tender, about 1 hour.
10
Uncover and bake, basting 2 or 3 times with pan juices, until top is golden, about 30 minutes more.
11
Let stand 10 minutes, then sprinkle with remaining tablespoon parsley.
12
Available at Asian cookware shops.

700

kcal

Calories

Fat

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 11 ingredients. The key ingredients include: 2 medium onions, halved lengthwise, thenthinly sliced lengthwise, 2 tablespoons unsalted butter, 1/2 lb smoked haddock fillet (finnan haddie), thawed if frozen, shredded with your fingers into 1/2-inch pieces, discarding any tough parts, 2 tablespoons chopped fresh parsley, and more.

Yes, Potato and Celery-Root Gratin with Smoked Haddock falls under the General category and is a great choice for this type of meal.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

That's it — enjoy your meal!