Want to get ahead? You can prepare this crowd-pleasing comfort dish a day in advance, then reheat it in the oven until it’s gorgeously golden and bubbling.

Marks & Spencer
Whatever you fancy cooking, we've got a recipe to inspire you. From speedy midweek meals to budget-friendly family dinners and weekend treats, let us help you cook and eat better, every day.
50MIN
Total time
Ingredients
Servings
4
2 packs
M&S smoked haddock fillets
230g per pack
500 ml
M&S Remarksable Value semi-skimmed milk
1
bay leaf
optional
40 g
M&S Remarksable Value unsalted British butter
2
leeks, sliced
2-3 leeks
40 g
M&S Remarksable Value plain flour
1 tbsp
wholegrain mustard
150 g
M&S Remarksable Value British garden peas
1 pack
(450 g)
(450 g)
M&S mashed potato
40 g
M&S Remarksable Value British mature cheddar, grated
to taste
spring greens, steamed
to serve
or wilted spinach

