Mushroom and chicken vol-au-vents

Name: Mushroom and chicken vol-au-vents
Prep time: 15 min
Total time: 15 min
Yield: 4 porties
Cuisine: Belgian
Ingredients: homemade puff pastry; cheddar cheese; fresh Swiss brown mushrooms; onion; white wine; salted butter; ground black pepper; full cream milk; water; Chicken stock paste