Mary Berry Fish Pie Recipe: Classic, Easy & Delicious

Mary Berry's fish pie is a classic British comfort dish made with a creamy white sauce, a mix of fresh and smoked haddock, hard-boiled eggs, and a golden mashed potato topping. It serves 6, takes around 1.5 hours, and delivers a rich, satisfying flavor without being complicated.

Recipe Overview at a Glance

What Is the Best Fish Pie Recipe Mary Berry Makes?

Mary Berry has published several fish pie recipes across her books and BBC appearances. Her most beloved version originally featured on The Mary Berry Story uses fresh and smoked haddock in a buttery white sauce with hard-boiled eggs, topped with smooth mashed potato. It's the original, and for most home cooks, it's the best.

Her "exceedingly good double fish pie," which appears on her own website, adds a second layer of fish variety and depth. Then there's her more modern version, updated for Good Food Magazine in December 2025, which uses haddock, prawns, frozen peas, and a grated potato topping instead of mash.

The classic BBC version remains the go-to for most readers and that's what this article focuses on, with all major variations included below.

What Are the Five Core Ingredients in Fish Pie?

At its heart, a great fish pie comes down to five building blocks:

• Fish fresh and/or smoked (haddock, cod, salmon)
• White sauce butter, flour, and milk (a simple béchamel)
• Eggs hard-boiled, added to the filling
• Potato topping mashed or crushed, golden from the oven
• Seasoning salt, pepper, lemon juice, and fresh herbs

Everything else leeks, prawns, cheese, spinach, dill is a variation on these foundations.

Detailed Ingredients List (Classic Mary Berry Fish Pie, Serves 6)

For the Filling

• 75g (3oz) unsalted butter, plus extra for greasing
• 1 large onion, roughly chopped
• 50g (2oz) plain flour
• 570ml (1 pint) whole milk
• Salt and freshly ground black pepper
• 2 tbsp lemon juice
• 350g (12oz) fresh haddock, skinned, cut into 1cm pieces
• 350g (12oz) undyed smoked haddock, skinned, cut into 1cm pieces
• 4 hard-boiled free-range eggs, roughly chopped

For the Mashed Potato Topping

• 900g (2lb) floury potatoes (Maris Piper or King Edward), peeled and evenly chopped
• 8 tbsp hot milk
• 50g (2oz) unsalted butter
• Salt and pepper to taste

Equipment You'll Need

• Large saucepan (for sauce and potatoes)
• Shallow ovenproof dish (2.5 litre / 4½ pint)
• Potato ricer or masher
• Wooden spoon or silicone spatula
• Sharp knife and chopping board

How Do You Make Mary Berry's Fish Pie? (Step-by-Step)

Mary Berry Fish Pie Variations

Mary Berry Fish Pie Recipe with Leeks

Leeks add a subtle sweetness that complements smoked fish beautifully. Swap the onion for 2 medium leeks (white parts only, finely sliced) and cook them gently in butter before making the sauce. Add 1 tbsp lemon zest and a handful of fresh dill to the sauce for extra brightness.

Mary Berry Fish Pie with Prawns

Use 520g of mixed fish pie mix (cod, salmon, smoked haddock) and add 180g of raw, peeled prawns to the filling. Stir the prawns in at the end they cook quickly and can turn rubbery if overcooked. This version works especially well when paired with leeks.

Mary Berry Fish Pie with Crushed Potatoes

Instead of mashed potatoes, boil 800g of small golden or new potatoes until tender, then crush them roughly with a fork. Drizzle with 2 tbsp olive oil and a squeeze of lemon juice before spreading over the filling. Bake at 200°C for 30–40 minutes. The result: crispy-edged, hearty topping with more texture than mash.

Nutrition comparison for crushed vs mashed topping (per serving):

Simple Fish Pie Recipe (No Cream)

Skip the cream entirely and build the sauce with just butter, flour, and milk. Mary Berry's classic white sauce method does exactly this no cream needed. Add frozen peas (100g) and a handful of spinach for extra veg, and you have a lighter, simple fish pie that doesn't sacrifice flavor.

Do I Need to Cook Fish Before Putting It in Fish Pie?

No and this is a common point of confusion. In Mary Berry's method, the fresh haddock is cooked briefly (2 minutes) directly in the hot white sauce before being transferred to the dish. The smoked haddock is stirred in raw and finishes cooking in the oven.

Some recipes poach the fish in milk first, then use that infused milk to build the sauce. This adds depth of flavor and is worth trying, but adds time. Mary Berry's approach is faster and equally effective for a weeknight meal.

What's the Secret to a Good Fish Pie?

After reviewing multiple versions and testing methods, these are the factors that consistently separate a good fish pie from a great one:

• Use floury potatoes for the topping. Maris Piper and King Edward produce the fluffiest mash and crispiest top.
• Let the filling cool before adding the mash. Spreading mash over hot filling causes it to sink. A 15-minute rest makes a real difference.
• Season every layer. The sauce, the fish, and the mash all need proper seasoning not just a pinch at the end.
• Don't skip the lemon juice. It cuts through the richness of the sauce and lifts the whole dish.
• Use undyed smoked haddock. Dyed smoked haddock contains artificial coloring and can add a slightly harsh flavor.

Should Fish Pie Have Eggs in It?

Traditionally, yes. Hard-boiled eggs have been a feature of British fish pie since at least the 19th century. They add protein, texture, and a mild richness that balances the smoky fish and creamy sauce.

That said, eggs are optional. Many modern versions omit them entirely Jamie Oliver's reviewers note they frequently skip the egg with great results. If you dislike eggs or are cooking for someone with an allergy, leave them out without any impact on the overall structure.

One important note: if you plan to freeze the pie, omit the eggs entirely. Hard-boiled eggs become tough and rubbery after freezing.

How to Elevate a Fish Pie

These additions take the recipe from good to genuinely impressive:

• Add fresh dill or tarragon to the sauce both pair exceptionally well with white fish and smoked haddock
• Stir in a teaspoon of Dijon or English mustard for a subtle, savory kick
• Incorporate baby spinach or frozen peas into the filling just before baking for color and nutrition
• Grate a small amount of nutmeg into the mash a technique Jamie Oliver uses that adds warmth
• Finish with a sprinkle of grated Gruyère over the mash before baking for a golden, cheesy crust
• Use a fish stock instead of plain milk in the white sauce for deeper umami flavor

Serving Suggestions

Mary Berry's fish pie is a complete meal on its own, but it pairs well with:

• Steamed or buttered green beans
• A simple garden salad with light vinaigrette
• Crusty sourdough or brown bread
• Mushy peas (traditional British pairing)

Wine pairings: A crisp, unoaked Chardonnay or dry Pinot Gris works best both complement white fish without overpowering the sauce. For a more budget-friendly option, a light Picpoul de Pinet is a reliable choice.

If you're building a proper British spread, this fish pie sits perfectly beside a classic Sunday roast. Add Mary's crispy Yorkshire puddings for the ultimate comfort combination or, if you're planning ahead for a batch-cook week, try her classic beef lasagne another slow, saucy, family-sized British baked main.

Make-Ahead, Storage, and Freezing

Troubleshooting Common Fish Pie Problems

• Lumpy sauce: Always add cold milk to the roux gradually, whisking or stirring constantly. Adding too much at once causes lumps.
• Watery filling: Let the filling cool before topping with mash. If still watery after baking, the fish may have released excess moisture pat fish pieces dry with kitchen paper before adding to the sauce.
• Mash sinking into the filling: Cool the filling for at least 15 minutes before spreading the mash. Chilled filling is easier to top evenly.
• Pale mash topping: Brush lightly with a little melted butter before baking, or place under the grill for the final 3–5 minutes to achieve a deeper golden color.

Frequently Asked Questions