No-bake chocolate tart with PX sherry

To make the tart base, pulse the Oreos in a food processor until finely ground. Add the butter and salt, and process to combine (if you don’t have a food processor, crush the cookies in a bowl with a rolling pin until fine). Tip the mixture into a 23cm loose-bottomed tart tin and press firmly into the base and up the sides in an even layer, then chill until solid.

For the ganache filling, put the chocolates in a bowl. Put the butter and cream into a pan over a medium heat and bring to a simmer, then pour the cream mixture over the chocolate and leave for 1 minute before stirring together to form a smooth ganache. Pour in the sherry and stir to combine. Pour the ganache into the tart base and gently spread into an even layer. Chill until set.

For the cream topping, whisk the cream, sherry and vanilla until the mixture holds soft peaks. Spread over the top of the tart, not quite to the edge. To make the chocolate curls, pour the melted chocolate onto the back of a baking tray and spread into a thin and even layer. Put the tray into the freezer for 2 minutes until the chocolate has lost its shine but isn’t frozen solid. Use a bench scraper or metal spatula to scrape the chocolate into curls and shards. Scatter the chocolate over the cream and serve. The tart will keep in a sealed container in the fridge for 2-3 days.