Grease a pie dish with olive oil and put the first thawed sheet of puff pastry in pie dish
In a medium saucepan make the four cheeses recipe from the packet and add the onoin,celery,beens,carrotts and bring to boil for 5 mins and then simmer for 15mins and then add sausages
After 15 mins add to pie dish and put top of thawed puff pastry on top and put a couple of fork holes in top and brush milk on top to make more crispy
Bake for 35 minutes and serve add sauce on top if wish so