Serves 4.
Ingredients.
2 onions, chopped
25g butter
6 large potatoes,
cubed
1 medium
cauliflower or romanesco, broken into florets
1 tsp mustard
All the leftover
cheese you have in your fridge, grated
1 egg
A splash of milk
Method.
1)
Fry
the onions in the butter in a large pan, then add the potatoes and cauliflower.
Cover with salted water and boil until tender. Meanwhile pre-heat the oven to
180C/350F/gas mark 4.
2)
Drain
and mash the cooked vegetables, then add the mustard. While the mixture is
still hot stir in most of the cheese to melt it, keeping a little cheese to
sprinkle on the top of the pie.
3)
Beat
in the egg with the milk, then season.
4)
Transfer
the mixture to an ovenproof dish, then rough the top with a fork. Sprinkle the
rest of the cheese over the top.
5)
Bake
until the top is brown and crispy.