Boil the kettle. Cut the lasagne sheets in half lengthways, then into two-centimetre strips, using a crinkle-cut knife, if you’ve got one. Trim the spring onions and finely chop with the ...

Jamie Oliver has a fair number of traybake recipes on his website that require minimal effort to cook. One of his favourites seems to be his salmon in a bag dish which only requires the use of ...