Step 1

Peel the potatoes and chop roughly.

Step 2

Place in a pan of salted water and cook until they are are soft.

Step 3

Whilst waiting for the potatoes to cook, cook the fish according to the instructions on the packet.

Step 4

Mash the potato, season and stir in the chopped chives.

Step 5

Put the spinach in the bottom of an ovenproof dish, then place the cooked fish and sauce on top.

Step 6

Pipe the potato around the outside, leaving a gap in the middle.

Step 7

Sprinkle the cheese in the gap and top with the chopped spring onion.

Step 8

Then either place under the grill or in a hot oven until the cheese is melted and the potato is golden brown.