Posh Fish and Chips: Baked Panko Cod with Lemon Butter Sauce

Fish and chips are a beloved British classic, but they’re not always the healthiest option. Try this lighter, elegant version — baked panko cod with a simple lemon butter sauce. The crispy panko crust and bright sauce give this dish a restaurant-quality finish while keeping it easy and family-friendly.

The crunchy panko topping is quick to prepare, and the entire meal comes together in about 45 minutes. It’s perfect for a midweek dinner and is refined enough to serve to guests.

Baked cod with panko or posh fish and chips in a white cast iron pan from above on a blue background

Posh fish and chips – why you’ll love them

  • EASY BUT ELEGANT: Panko-crusted cod is simple to prepare yet impressive on the plate—ideal for family dinners and entertaining.
  • RESTAURANT-FLAVOUR: A handful of ingredients delivers big flavour. The crunchy topping contrasts nicely with tender, flaky fish and the light lemon butter sauce.
  • USE ANY WHITE FISH: While cod is used here, you can substitute haddock, pollock, hake, tilapia, halibut, whiting, or another firm white fish—fresh or defrosted.
  • HEALTHIER METHOD: Instead of deep frying, this version bakes the fish with a panko breadcrumb topping made from a few tasty ingredients.
  • QUICK TO MAKE: The recipe takes around 45 minutes from start to finish and breaks down into a few straightforward steps.
  • SIMPLE SAUCE: The lemon butter sauce is made from just butter, olive oil, and lemon juice—an easy finishing touch that lifts the whole dish.

Fun fact: Some restaurants and retailers now serve lemony cod dishes that resemble this — this version adds homemade chips and a bright lemon butter sauce to complete the meal.

About the ingredients

Individual ingredients for panko baked cod with lemon butter sauce from above
Collage of 2 images showing ingredients for panko topping for cod with the ingredients written in the middle

Cod fillets: Skin-on or skinless, boneless fillets both work. Use fresh or fully defrosted frozen fillets. Any firm white fish is a fine substitute.

Panko breadcrumbs: Japanese-style panko gives a light, extra-crispy texture. If you don’t have panko, ordinary breadcrumbs, crushed crackers, cornflakes, or crushed tortilla chips will do.

Lemon: You’ll use both zest and juice. Zest goes into the panko topping for brightness; the juice flavors the butter sauce.

Fresh basil: Chopped basil in the topping adds freshness; dried herbs can be used in a pinch (about 1 teaspoon dried for every tablespoon fresh).

Grated parmesan: A small handful of grated parmesan (about 25 g) adds savoury depth to the topping. A strong cheddar or another firm cheese can be substituted.

Garlic powder and paprika: Optional, but they bring extra warmth and complexity to the crumb mixture.

Olive oil: A tablespoon stirred into the panko helps the topping crisp up in the oven.

Butter and olive oil for the sauce: Combining both gives a rich, silky lemon-butter sauce with a hint of Mediterranean flavour.

How to make it

Make baked panko cod with chips in a few simple stages:

  • Parboil the potatoes: Start the chips by parboiling the potato pieces, then roast them in the oven until golden and crisp while you prepare the fish.
  • Prepare the panko topping: Mix panko (or chosen breadcrumbs) with lemon zest, chopped basil, grated cheese, salt, pepper and any optional spices. Stir in a tablespoon of olive oil.
  • Arrange the fish: Place the fillets skin-side down in an ovenproof dish, then press the panko mixture over each fillet.
  • Bake until just cooked: Roast at about 210°C/410°F for 10–15 minutes, until the fish is opaque and flakes easily. The internal temperature should reach at least 63°C/145°F if you use a thermometer.
  • Make the sauce: Melt the butter and olive oil in the baking dish or a small pan, then add the lemon juice and swirl to combine into a simple lemon butter sauce.
  • Serve: Plate the crispy cod immediately with the chips and a vegetable side such as peas, and spoon the lemon butter over the fish.
collage of 4 images showing how to top cod with panko topping, bake it and then surround with lemon butter sauce

Tips for homemade chips (fries)

Homemade chips are an easy, satisfying side and I make them often. Try either of these methods:

  • Parboil potato pieces in already-boiling water for about 10 minutes, drain and let them steam dry briefly before roasting.
  • Or place sliced potatoes in cold water, bring to a boil, then simmer 2–3 minutes. Drain, let steam, then spread in a single layer on a baking tray, drizzle with oil and bake at high heat until golden and crisp.
  • For convenience, parboil extra potatoes, cool completely, freeze them flat on a tray, then bag. Roast from frozen next time—allow a little extra time in the oven.
collage of 2 images showing potato wedges being parboiled and in a baking dish ready to be baked

Serving suggestions

  • Serve simply with frozen peas and lemon wedges. Heat peas quickly in the microwave or on the stove while the fish comes out of the oven.
  • When in season, roasted or pan-fried asparagus is a lovely alternative. Sautéed broccoli or green beans also pair well and can be cooked quickly from frozen.
  • Coleslaw or tartar sauce are classic accompaniments if you prefer.
  • Always serve the baked panko cod right away so the topping stays crisp and the fish remains hot and flaky.
baked cod with panko in a square shaped beige cast iron pan on a blue background  with blue tea towel from above

More things to know (recipe FAQ)

How do I make my panko crisp?

Bake at a high oven temperature and include a tablespoon of olive oil in the panko mixture. If the topping isn’t as crisp as you’d like, briefly finish it under a hot grill/broiler for a minute—watch closely to avoid overcooking the fish.

I don’t have parmesan. Will the topping still taste good?

Yes. Parmesan adds flavour and helps the topping brown, but you can use strong cheddar, pecorino, crumbled feta, or another hard cheese, or omit cheese entirely and still get a tasty result.

I don’t have panko breadcrumbs. What else can I use?

Use ordinary breadcrumbs, crushed crackers, crushed cornflakes, pretzels, or even crushed tortilla chips or potato chips. To make the dish gluten free, choose a certified gluten-free breadcrumb or one of the alternative crushed options that is gluten free.

How do I know when the cod is cooked?

Cooking time depends on fillet thickness but is usually 10–15 minutes at 210°C/410°F. The flesh should be opaque and flake easily. If using a thermometer, the internal temperature should reach 63°C/145°F.

Can I use a different kind of fish?

Yes. Suitable substitutes include haddock, pollock, hake, tilapia, halibut, whiting, or other white fish. Choose what’s available and fresh where you are.

More easy fish dinners

Seafood is a quick, healthy option for busy weeknights. Try baked Mediterranean-style fish, fish with romesco sauce, sheet-pan lemon butter salmon with vegetables, tuna salad or tuna pasta for speedy meals, a crispy fish pie, or simple salmon fishcakes.

close-up of baked cod with panko topping in a cast iron pan and with a blue tea towel in the background

Posh Fish And Chips (Baked Panko Cod With Lemon Butter Sauce)

By: Helen Schofield
Baked panko cod with lemon butter sauce—simple, elegant, and delicious. Top the fish with a crunchy panko mixture, bake, then melt a light lemon-butter sauce around it. Perfect with homemade chunky chips and a side of peas, ready in about 45 minutes.
Prep: 10 mins
Cook: 40 mins
Total: 50 mins
Servings: 2 (adjustable)

Equipment

  • Ovenproof dish or cast iron pan
  • Baking tray
  • Digital meat thermometer (optional)

Ingredients

For the fish and potatoes

  • 3 oz (about 85 g) cod (2 small fillets) or other white fish
  • 4 medium potatoes, peeled and cut into chunky chips
  • 2 tbsp olive oil (approx.) for roasting potatoes
  • ¼ cup panko or other breadcrumbs
  • Zest of 1 lemon (juice reserved for sauce)
  • 2 tbsp fresh basil, chopped (or 2 tsp dried)
  • 1 oz (25 g) grated parmesan or other hard cheese
  • ½ tsp garlic powder (optional), ½ tsp paprika (optional)
  • ⅓ tsp salt, ¼ tsp pepper
  • 1 tbsp olive oil for the panko mixture

For the sauce

  • 2 tbsp butter
  • 1 tbsp olive oil (or an extra tbsp butter)
  • Juice of 1 lemon

To serve (optional)

  • Frozen peas or another vegetable side

Instructions

  1. Preheat the oven to 210°C/410°F. Lightly oil a medium baking dish or cast iron pan and place the fish fillets skin-side down if applicable.
  2. Parboil the potatoes: either boil in already-boiling water for 10 minutes, or start in cold water and boil 2–3 minutes after coming to a boil. Drain and let them steam dry a little.
  3. Spread the drained potatoes on a lined baking tray, drizzle with olive oil, toss, and roast for about 30 minutes until golden and crisp.
  4. Mix the panko, lemon zest, basil, grated cheese, garlic powder, paprika, salt and pepper in a small bowl. Stir in 1 tablespoon olive oil.
  5. Press half the panko mixture over each fish fillet. Bake the fish for 10–15 minutes until opaque and flaky (internal temperature 63°C/145°F if measured).
  6. While the fish is hot in the dish, melt the butter with the tablespoon of olive oil, then add the lemon juice and swirl to combine into a light sauce.
  7. Serve the cod immediately with the roasted chips and peas, spooning the lemon butter over the fish and scattering extra basil if desired.

Notes

For 4 servings: Double the fish and other ingredients and use a larger baking dish.

Fish choices: Use whichever firm white fish is available to you. Frozen fish should be fully defrosted in the fridge before cooking.

Substitutions: No panko? Ordinary breadcrumbs, crushed cereal, crackers or chips will work. No parmesan? Use another strong hard cheese or omit it.

Nutrition (approx. per serving)

Calories: 794 kcal; Carbohydrates: 96 g; Protein: 25 g; Fat: 38 g; Saturated fat: 13 g; Sodium: 865 mg; Fiber: 13 g; Sugar: 7 g.

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