Preparation
1) Finely chop and sauté the leek.
2) Once soft, add the chopped prawns, the pecans (broken up by hand) and the raisins.
3) Add the pine nuts to a frying pan with a little oil and fry until they are browned.
4) Wash, stem and salt the mushrooms then add them to a frying pan with some oil.
5) Once they have browned on one side, turn them over and fry the other side.
6) Stuff them with the filling and serve on a bed of green leaves with the toasted pine nuts.