Chicken and Leek Bake

Serves 4

INGREDIENTS:

• 450g (l lb) potatoes – peeled
• ½ medium onion – sliced
• ½ tbsp oil
• 225g (8oz) leeks – sliced
• 75g (3oz) mushrooms – sliced
• 75g(3oz) lean ham or chicken – sliced/cubed
• 1 tbsp parsley
• 1 tbsp cornflower
• 250ml milk – semi skimmed
• Seasoning