Pre heat oven to 200c.( I inserted pie bowl with base layer in last 6 min of pre heating, it hardens the surface of crust to hold the filling better as its a bit thick gravy kinda filling) take the bowl out, pour filling, brush milk on the side pie walls,cover another rolled pie dough over it. Secure edges, prick with tooth picks. Bake for 20 min in 170 c or until sides r golden brown.