Vol-o-vent with Mushrooms in Cream Sauce recipe

Ingredients:
4 large (or 8 small) Vol-o-vents kept warm in oven.
100g minced onion.
600g sliced mushrooms.
2 tbsp butter.
1 tbsp flour.
1 cup white wine.
1 cup cream.
Parsley.
1/2 tsp salt and pepper.

Procedures:
Sauté onions in butter until limp, add mushrooms & blend in flour,salt & pepper, sauté for a few min., add wine heat up & stir, add cream heat up again and fill vol-o-vents with mushrooms top with a bit minced parsley and serve.