Cheese and onion potato pie

A Lancashire-style crustless pie of fluffy cheesy mash and soft onions, baked with sliced tomatoes on top until golden. Cheap, cosy and loved by kids.

Ingredients

Method

  1. Boil the potatoes in salted water until very tender.
  2. Meanwhile cook the onions slowly in half the butter until soft and sweet.
  3. Heat the oven to 200°C (180°C fan). Drain and mash the potatoes with the rest of the butter and the milk, then beat in the onions, mustard and three-quarters of the cheese. Season.
  4. Spread into a baking dish, lay the tomato slices on top, scatter with the rest of the cheese and bake until golden and crisp at the edges.
  5. Warm the beans and serve alongside.