Preheat oven to 180 °C
Grease your dish with butter or margarine if you prefer. Slice the mushrooms, Jerusalem artichokes and sweet potato very thinly. Arrange them as if you putting them back together, fan and wave like into the dish.
Take a small saucepan add the cream and heat on a low setting. Gently pull the rosemary from its stem, add the pulled off pits to the pan with cream, add some ground pepper and a small pinch of salt
Pour the cream over the ingredients in the dish. Cook in oven covered with foil for 45 minutes. Remove from oven and discard the foil.
Grate your chosen cheese and roughly chop nuts, scatter both over the bake. Return to oven and cook for a further 15 to 20 minutes until golden. Leave to cool for about 10 to 15 minutes. Sprinkle with salt flakes, a pinch of sweet paprika, rosemary and more of the ground pepper. Hope you enjoy.
