Ingredients
1kg potatoes
1 lemon
40g unsalted butter
400g frozen peas
2 carrots
2 onions
olive oil
500ml semi-skimmed
milk
2 x 150g frozen
salmon fillets
2 x 100g frozen white
fish fillets
65g plain flour
100g frozen spinach
125g frozen cooked
peeled prawns
1 heaped teaspoon
English mustard
40g cheddar cheese
Instructions
Preheat the oven to 180ºC/350ºF. Peel the potatoes and cut into large chunks,
then put them into a large pan of boiling salted water for 15 minutes, or until
cooked through. Drain and mash with a pinch of salt and pepper, the zest from
the lemon and the butter. Place the frozen peas in a colander, pour over some
boiling water to defrost them, then drain well and pulse a few times in a food
processor. Fold them through the mashed potato, then leave to one side.
Peel and chop the carrots and onions and cook them in a
large ovenproof pan (roughly 30cm in diameter) with a lug of oil for 15
minutes, or until softened but not colored, stirring occasionally. Meanwhile,
heat the milk in a pan on a medium heat. Once simmering, add the frozen fish
fillets for around 10 minutes, or until cooked through, then use a slotted
spoon to remove them to a plate, taking the pan off the heat.
Stir the flour into the carrots and onions, then gradually
add the milk, a ladleful at a time, stirring continuously. Stir in the spinach
until broken down, then season to perfection. Flake in the fish fillets
(carefully remove and discard the skin if the fillets have it), add the prawns,
mustard and the juice from half the lemon, grate in the Cheddar and stir gently
to combine. Top with the pea-spiked mash and smooth out, scuffing it up
slightly with a fork to give it great texture. Bake for 30 to 40 minutes, or
until beautifully golden.