You'll Need: 4 large (or 8 small) Vol-o-vents kept warm in oven, 100 gr onions minced, 600gr mushrooms sliced, 2 tbsp butter, 1 tbsp flour, 1 cup white wine, 1 cup cream, parsley, 1/2 tsp. salt & pepper. Procedures : Saut? onions in butter until limp, add mushrooms & blend in flour,salt & pepper, saut? 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.