For the almond cream filling, grate the marzipan into a food processor, then add the butter with a pinch of salt. Whizz until quite smooth, combined and pale. Transfer to a bowl, cover with cling film and chill for 1-2 hours until firm.

For the shortbread whizz together the butter and sugar until fluffy (quite tricky with such minute amounts), add the flour (I used 150g flour and 15g ground rice by the way, adds crunch to cookies) and pulse until just forming a dough. Preheat the oven to 150°C/Gas 3½.

Roll the dough out very thinly, cut in rounds with a biscuit cutter and transfer to a baking sheet lined with baking parchment. The recipe says cut into 30 rounds, but there's nowhere near enough dough for that! I got 14.

Use a piping bag nozzle or similar little round shape to cut holes in the middle of half the biscuit rounds. Bake in the oven for 15 minutes until crisp and golden. Cool completely on a wire tray.

When the cookies are cold spread about a teaspoon of almond cream on a bottom half and make a little indent in the middle. Add about half a teaspoon of jam.

Add a top half and press down gently so that the jam comes up slightly through the hole. Dust with icing sugar and then decide who is going to get one of the 7 cookies, unless you've doubled up!