Cheesy fish pie recipe

Name: Cheesy fish pie
Yield: Serves 2 adults and 2 children
Ingredients: 600g Maris Piper potatoes, peeled and roughly chopped; 2 medium carrots (about 180g), peeled and roughly chopped; 300g sweet potato, peeled and roughly chopped; 40g kale, trimmed of any stalks and finely chopped; 2 tbsp unsalted butter; 1 onion, finely chopped; 1 garlic clove, crushed; 3 tbsp plain flour; 350ml whole milk; 500g frozen fish pie mix; 30g Cheddar cheese, roughly grated

Created by The Tesco Recipes team

Fish pie is an absolute classic and this easy recipe is suitable from 10+ months*, making it ideal for all the family. We've used frozen fish pie mix to keep things simple and budget-friendly, with lots of root and green veg for hidden goodness. The cheesy mash top will ensure clean plates! Great for making ahead and freezing too…

See method

Serves 2 adults and 2 children
Takes 1 hr

Freezable

Shop your ingredients

Tesco Maris Piper Potatoes 1.25Kg
600g Maris Piper potatoes, peeled and roughly chopped
£1.45
£1.16/kg
Tesco Carrots Loose
Aldi Price Match
2 medium carrots (about 180g), peeled and roughly chopped
£0.11
£0.69/kg
Tesco Large Sweet Potatoes Loose Class 1
Aldi Price Match
300g sweet potato, peeled and roughly chopped
£0.42
£1.19/kg
Tesco Curly Kale 180G
70p Clubcard Price
(£3.89/kg)
Offer valid for delivery from 12/09/2026 until 21/09/2026
40g kale, trimmed of any stalks and finely chopped
£0.80
£4.44/kg
Tesco British Unsalted Butter 250G
Aldi Price Match
2 tbsp unsalted butter
£1.85
£7.40/kg
Tesco Brown Onions Loose
Aldi Price Match
1 onion, finely chopped
£0.11
£0.95/kg
Tesco Garlic 4 Pack
Aldi Price Match
1 garlic clove, crushed
£0.87
£0.22/each
Stockwell & Co. Plain Flour 1.5Kg
Aldi Price Match
3 tbsp plain flour
£0.70
£0.47/kg
Tesco British Whole Milk 568Ml, 1 Pint
Aldi Price Match
350ml whole milk
£0.85
£1.50/litre
Tesco Fish Pie Mix 340G
500g frozen fish pie mix
£7.25
£21.32/kg
Eatlean Grated Cheese 180g
30g Cheddar cheese, roughly grated
£2.50
£13.89/kg

Method

Put the potatoes, carrots and sweet potatoes into a medium saucepan of boiling water and boil for 20-25 mins until tender. Add the kale for 2 mins until completely tender, then drain and mash. Leave to cool.
Meanwhile, heat the oven to 200°C, fan 180°C, gas 6. Melt the butter in a large saucepan set over a medium high heat and fry the onion for 10 mins until soft, then add the garlic for 1 min more. Stir in the flour and cook, stirring constantly for 1 min. Pour in the milk, a little at a time, stirring vigorously (use a whisk if it starts to look lumpy). Once all the milk has been added, add the fish pie mix, and allow to gently simmer for 5-7 mins until the fish is cooked before stirring in three-quarters of the cheese. You can break the fish up at this stage with a wooden spoon or mash if it needs to be in smaller pieces for your child.
Transfer to a 1.2ltr baking dish and top with the mash; scatter over the remaining cheese. Bake for 30 mins until golden and piping hot.

See more Baby weaning recipes

Freezing and defrosting guidelines
Freeze before putting in the oven, wrapped in a layer of cling film and foil for up to a month; or divide into smaller portions to freeze. For more tips on freezing and defrosting food, read our article Love Your Freezer.

*This recipe is appropriate for babies progressing through the weaning stages, from around 10-12 months of age. Babies may now be used to 3 meals a day and enjoying more rounded dishes.
When weaning your baby, introduce allergenic foods one at a time and not before 6 months.