300驳/10陆辞锄 chestnut mushrooms, halved or quartered if large
1 tsp garlic powder or 1 garlic clove, crushed
1 onion, finely chopped
1 tsp dried tarragon or parsley
400ml/14fl oz chicken stock, made with 1 stock cube
4 tsp plain flour
freshly ground black pepper
1 tbsp sunflower oil
4 tbsp reduced fat cr猫me fra卯che
2 x sheets filo pastry (around 85g/3oz)
3 boneless, skinless chicken breasts (around 500g/1lb 2oz), cut into roughly 2cm/戮in chunks