The Ultimate Coastal British Fish Pie with Smoked Haddock and Buttery Mash

🌍 Cuisine: British
🏷️ Category: Main Course
⏱️ Prep: 30 minutes
🍳 Cook: 45 minutes
πŸ‘₯ Serves: 4-6 servings

πŸ“ About This Recipe

A quintessential British comfort classic, this fish pie features succulent flakes of white fish and smoked haddock bathed in a velvety, herb-flecked cream sauce. Topped with a cloud of golden, buttery mashed potatoes, it captures the essence of a cozy English seaside tavern. This soul-warming dish is the perfect marriage of delicate seafood and hearty, rustic textures that will have everyone asking for seconds.

πŸ₯— Ingredients

The Seafood

  • 400 grams Cod or Haddock fillet (skinless, cut into 3cm chunks)
  • 250 grams Undyed Smoked Haddock (provides the essential smoky depth)
  • 150 grams Raw King Prawns (peeled and deveined)

The Poaching Liquid & Sauce

  • 600 ml Whole Milk (full fat for the best richness)
  • 1 Bay Leaf (fresh or dried)
  • 50 grams Unsalted Butter
  • 50 grams All-purpose Flour
  • 3 tablespoons Fresh Parsley (finely chopped)
  • 1 teaspoon English Mustard (adds a subtle heat and tang)
  • 1/2 cup Frozen Peas (adds color and sweetness)

The Potato Topping

  • 1 kg Maris Piper or King Edward Potatoes (peeled and chopped into even chunks)
  • 50 grams Unsalted Butter (at room temperature)
  • 50 ml Warm Milk
  • 50 grams Cheddar Cheese (grated, for a golden crust)

πŸ‘¨β€πŸ³ Instructions

  1. 1

    Place the potatoes in a large pot of salted water. Bring to a boil and simmer for 15-20 minutes until tender. Drain well and let them steam-dry in the colander for 2 minutes to ensure a fluffy mash.

  2. 2

    While the potatoes cook, place the cod and smoked haddock in a wide skillet. Pour over the 600ml of milk and add the bay leaf. Simmer gently for 4-5 minutes until the fish is just opaque.

  3. 3

    Carefully lift the fish out of the milk with a slotted spoon and set aside on a plate. Strain the poaching milk into a jug and discard the bay leaf; do not throw this milk away as it is liquid gold for your sauce!

  4. 4

    In a clean saucepan, melt the 50g of butter over medium heat. Stir in the flour and cook for 1-2 minutes to create a roux, but do not let it brown.

  5. 5

    Gradually whisk the warm poaching milk into the roux, a little at a time, until you have a smooth, thick sauce. Let it simmer for 2-3 minutes to cook out the floury taste.

  6. 6

    Remove the sauce from the heat. Stir in the English mustard, chopped parsley, and a generous pinch of black pepper. Taste before adding salt, as the smoked fish is naturally salty.

  7. 7

    Mash the potatoes thoroughly with the remaining butter and warm milk until completely smooth. Season with salt and white pepper.

  8. 8

    Preheat your oven to 200Β°C (400Β°F/Gas Mark 6). Gently flake the poached fish into large chunks, removing any stray bones, and place in a large ovenproof baking dish.

  9. 9

    Scatter the raw prawns and frozen peas over the fish chunks. Pour the creamy parsley sauce over everything and gently fold with a spoon to combine without breaking the fish too much.

  10. 10

    Spoon the mashed potatoes over the top, starting from the edges to seal the sauce in. Use a fork to create ridges on the surfaceβ€”these will become crispy and golden in the oven.

  11. 11

    Sprinkle the grated cheddar cheese over the potato ridges for extra flavor and crunch.

  12. 12

    Bake in the center of the oven for 25-30 minutes, or until the sauce is bubbling at the edges and the top is beautifully bronzed.

  13. 13

    Allow the pie to stand for 5 minutes before serving. This helps the sauce thicken slightly so it doesn't run all over the plate.

πŸ’‘ Chef's Tips

Always use a mix of fresh and smoked fish; the smoked haddock provides that unmistakable 'English' flavor profile. Ensure your potatoes are 'steam-dried' after boiling by leaving them in the colander for a few minutes; excess water makes for a runny topping. Don't overcook the fish during the poaching stage; it will finish cooking perfectly in the oven. If you want an extra decadent sauce, stir in a tablespoon of heavy cream or a squeeze of lemon juice at the very end. For a gluten-free version, simply swap the all-purpose flour for a 1:1 gluten-free flour blend in the roux.

🍽️ Serving Suggestions

Serve with a side of buttered garden peas or steamed tenderstem broccoli. A crisp, chilled glass of Chardonnay or a light English Ale pairs beautifully with the creamy sauce. Add a wedge of fresh lemon on the side to cut through the richness of the mash. A dollop of tartare sauce on the side is a non-traditional but delicious accompaniment. A simple green salad with a sharp vinaigrette helps balance the hearty nature of the dish.