Cheese and Potato 'Pie' for 4

Scaled to serve 9

2.2 medium onionpeeled and dicedboil til softdrainremove shoemashbake til cheese golden
18.0 medium potatoescleaned and diced
2.2 shoeunlace
4.5 tbsp of butter
2.2 dash of milk
225.0 g of cheddargrated
168.8 g of cheddar to topgrated
preheat oven 180c