Easy Fish Pie with Mashed Potato Topping

Fish pie with mashed potato topping, an all-time favourite classic British recipe that brings all the family together around the table.

Overhead shoot of a dish with fish pie and mashed potato topping

There are dishes that are perfect for the cold season, like stews or hot soups, they are soothing and ideal when you need a bit of comfort.

Other dishes are so refreshing, and are best during the hot summer days to cool us down.

And there is yet another category of dishes that are perfect all year round. And this lovely fish pie with mashed potato topping is definitely one of those foods.

No matter what time or day, will always be the first choice when it comes about cooking the perfect family meal.

2 dishes of fish pie

What is so great about it is that everybody can tuck into it, there is no strong flavour or spiciness to keep little ones away. But it is so delicious, you will find yourself making it again the very next day.

What can you put in a fish pie?

I have used cod for my fish pie, but salmon is another great option, and many people use it to make this kind of fish pie.

Haddock, or smocked haddock, is also a nice choice, so just use your favourite fish and enjoy a great meal.  Seafood is another great option for this pie.

2 dishes of fish pie to be cooked


I always try to cook fish as often as I can, it’s the perfect choice for a healthy lifestyle, it’s got the right kind of fat that the body needs, and it’s so delicious.

I know that people can be put off my some fish that has a stronger, “fishy” taste, but cooked in a pie, it’s just perfect.

How do you make fish pie sauce?

To make the sauce, add butter to a pan, melt, then add the flour and stir well to get a paste.

Pour the milk in gradually, whisking well to avoid any lumps until the sauce thickens. Once the sauce is cooked, you can season it with salt and pepper, add the grated cheese (cheddar, parmesan, gouda, any cheese you like) and spring onions and that’s all.

The sauce is the famous bechamel sauce, that can be used for any pie, like my Chicken Pie, or Veggie pie.

Other dishes made with bechamel sauce are: macaroni cheese, or any kind of pasta bake.

Overhead shoot of a dish of fish pie and a small bowl of peas

Fish pie with peas and mash topping

What herbs go with fish pie?

Dill and parsley are the best herbs to be used with this dish.

This dish is sheet pleasure, and you get everything in one pot: carbs, protein, vegetables, so that you can enjoy a full meal with your family.

Kids usually love this kind of food, which makes this fish pie the ideal family dinner recipe.

Fish pie with mashed pototo topping

Fish pie with mashed pototo topping

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4.6 from 5 votes
Fish pie with mashed pototo topping
Fish Pie with Mashed Potato Topping
Prep Time
40 mins
Cook Time
40 mins
Total Time
1 hr 20 mins

Fish pie with mashed potato topping, my kind of comfort food. Healthy, delicious and so easy to make.

Course: Main Course
Cuisine: English
Keyword: comfort food
Servings: 2 people
Calories: 611 kcal
Author: Daniela Anderson
For the fish filling
  • 350 g cod loin
  • 1 spring onion
  • 1/2 cup peas
  • 25 g butter
  • 1 tbsp plain flour
  • 1 cup milk
  • a pinch of ground black pepper
  • 2 tbsp grated parmesan cheese
For the mashed potato topping:
  • 500 g baby potatoes
  • 1/4 cup milk
  • 1 knob of butter
  • 1/4 tsp salt
  • 2 tbsp grated parmesan cheese
  • 1 tbsp chopped fresh dill and parsely
  1. Preheat the oven to 200 degrees C. (390 Fahrenheit).
  2. Place the cod loin on a baking tray lined with non stick parchment paper and bake for 30 minutes until thoroughly cooked. Remove from the oven and allow it to cool.
  3. Place the baby potatoes in a large pan and cover with plenty of water.
  4. Add a pinch of salt and boil until tender.
  5. Drain the water and allow them to cool.
  6. Peel and mash, then add milk, and butter. Mix well until combined and the mash is light and creamy.

  7. Set aside.
  8. In a saucepan, melt the butter and add the flour, whisking well.
  9. Add the milk and continue to whisk until the sauce thickens.
  10. Next, season with salt and ground black pepper, add the parmesan chees, dill and parsley, chopped spring onion and stir.

  11. In goes the cod loin, which can be cut into chunks. The peas can go in as well.
  12. Give the mixture a good stir and spoon it onto oven-proof dishes.
  13. Top it with the mashed potatoes and sprinkle over the parmesan cheese.
  14. Bake at 180 degrees C for 40 minutes until golden and bubbly.
Recipe Notes
  • Click on the US Customary link to see the measurements displayed in cups and ounces.
  • The servings can be adjusted by clicking the number next to Servings.
Nutrition Facts
Fish Pie with Mashed Potato Topping
Amount Per Serving
Calories 611 Calories from Fat 171
% Daily Value*
Total Fat 19g 29%
Saturated Fat 11g 55%
Cholesterol 127mg 42%
Sodium 1295mg 54%
Potassium 2065mg 59%
Total Carbohydrates 60g 20%
Dietary Fiber 7g 28%
Sugars 11g
Protein 47g 94%
Vitamin A 21.1%
Vitamin C 80.8%
Calcium 35%
Iron 18.5%
* Percent Daily Values are based on a 2000 calorie diet.





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  • Reply
    Millie Thom
    May 12, 2016 at 5:27 pm

    This looks delicious, Daniela. I like fish pie with any white fish. Although I love salmon, I’ve never tried it in fish pie, but I think it should be just as nice.

    • Reply
      Daniela Apostol
      May 12, 2016 at 8:22 pm

      I may try soon with salmon as well, l love it, hopefully it will taste nice in a fish pie too. Thanks, Millie! ?

  • Reply
    July 21, 2016 at 7:09 am

    Hi, Daniela Apostol
    I love Fish pie with peas and mash topping ! this looking so much delicious! It makes me feel hungry…
    Can’t wait to try it out. 🙂
    Thanks for sharing !

    • Reply
      Daniela Apostol
      July 22, 2016 at 7:25 pm

      Hi Tiffany,

      Thank you! I am so glad you like it. It is my favourite fish pie and so easy to make.

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