Dice potatoes. In a casserole, cook potatoes for 20 minutes in boiling water. Do the same thing with Les Cultures de chez nous sliced leeks. In a bowl incorporate potatoes, leeks, cream, parsley, nutmeg, salt and pepper.
Preheat oven at 350°F (180°C).
Over a floured work surface, slice filo dough in two. brush with butter, then add stuffing and close everything up. Do it again. Oven bake for 15 to 20 minutes.