600g/1lb 5oz squash, peeled and cut into 15mm/鈪漣n cubes
陆鈥1 tsp chilli flakes, to taste
2 fennel bulbs, cut into 1cm/陆in cubes
2 leeks, cut into 1cm/陆in slices
20驳/戮辞锄 tarragon, leaves only
100驳/3陆辞锄 hazelnuts, roughly chopped
2 tbsp olive oil
1 tsp sea salt flakes
75g/2戮oz mature cheddar, grated
400ml/14fl oz double cream or cr猫me fra卯che