Haddock and leek crumble with cheddar and oat topping
A creamy haddock and leek bake under a crisp, cheesy oat topping. Proper cold weather comfort.
- Time1 hr
- LevelEasy
- Costabout £2.24 a head
- Oven190°C (170°C fan)
Cost is worked out from Aldi and Tesco shelf prices in October 2026. Your shop and brands will differ.
Ingredients
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Method
- 1
Heat the oven to 190°C (170°C fan). Melt 25 g butter in a pan and cook the leeks for 8 minutes until soft.
8 min - 2
Stir in 25 g flour for 1 minute, then add the milk a little at a time, stirring until you have a smooth, thick sauce. Add the mustard.
- 3
Fold in the haddock and peas, then tip into a baking dish.
- 4
Rub the cold butter into the remaining flour with your fingers until it looks like breadcrumbs. Stir in the oats and cheese.
- 5
Scatter the topping over the fish. Bake for 30 minutes until golden and bubbling at the edges.
30 min - 6
Rest for 5 minutes, then serve with green beans.
Double check before you cook. Recipes can contain mistakes. Any diet labels come from the ingredients as written in this recipe and are a guide, not a guarantee. Always check every ingredient and the packet label for allergens and cross contamination, and ask your doctor or dietitian what is right for you, especially with coeliac disease, diabetes or a serious allergy. This is not medical advice.