By Prue Leith
If you like American pumpkin pie, you’ll love this. It’s a savoury dish that’s a bit sweet, but spicy too, and huge fun to make.
Heat the oven to 220°C/fan 200°C/gas mark 7. Put the squash in a large roasting tin, seeds and all. Add the coriander seeds, thyme and 2 tablespoons o