Great British Bake Off special: Salted peanut millionaire shortbread 

Great British Bake Off special: Salted peanut millionaire shortbread

LIAM CHARLES, contestant 2017 

MAKES 10-12

175g plain flour

90g rice flour or ground rice

¼ tsp fine sea salt

85g caster sugar

175g unsalted butter, chilled and diced

½ tsp vanilla bean paste

250g 70% dark chocolate, chopped into small pieces

FOR THE PEANUT BUTTER

150g shelled unsalted peanuts

½ tsp fine sea salt

1 tsp runny honey

1-2 tsp peanut oil

FOR THE SALTED CARAMEL

90ml double cream

½ tsp vanilla bean paste

30g liquid glucose

185g caster sugar

l00g salted butter, at room temperature, diced

YOU WILL NEED

baking paper

10 or 12-bar silicone mould tray (each bar about 3cm x 7cm)

ruler

baking tray

sugar thermometer

  • Put the flours, salt and sugar into a processor and pulse to combine. Add the butter and vanilla and blitz to combine to a dough.
  • Turn out the dough on to a large sheet of baking paper, gently knead it into a ball, then shape it into a brick. Place another sheet of baking paper on top and, using a rolling pin, roll into a 1cm-thick rectangle at least the size of your mould tray. Use a sharp knife and a ruler to cut bar shapes. Press the bars into each hollow in the mould tray. Prick with a fork, then chill for 15 minutes. Heat the oven to 180C/160C fan/gas 4.
  • Bake the bars for 14-16 minutes, until golden at the edges. Meanwhile, start making the peanut butter. Tip the peanuts into a baking tray and dry-roast on the oven shelf beneath the shortbread, for 10-12 minutes, until golden, then remove and allow to cool. Take the shortbread out of the oven, place the tray on a wire rack and cool.
  • Continue making the peanut butter. Put 100g of the roasted peanuts and the salt, honey and oil in a processor and blitz to a paste. Set aside. Put the reserved peanuts in the processor and chop up.
  • To make the caramel, slowly heat the cream and vanilla in a small pan until almost boiling. Meanwhile, warm a medium pan over a medium-low heat. Add the glucose and 60g of the sugar and heat gently, swirling the pan, until dissolved and a light straw colour.
  • Add the remaining sugar and heat for 15-25 minutes, stirring occasionally, until dissolved. Remove from the heat, then add the heated cream. Return the pan to a low heat and stir continuously, until melted and smooth. Remove from the heat.
  • Stir in the butter, then mix in 2 tablespoons of the peanut butter and the chopped peanuts. Spoon 1 rounded tablespoon of the peanut caramel on top of each shortbread bar (still in the mould tray) and spread evenly. Chill until set.
  • Melt 165g of the chocolate in a bowl over a pan of simmering water until it reaches 45C on a sugar thermometer. Stir in the remaining chocolate to melt. Pour it over the caramel-topped shortbread bars and spread evenly. Chill for 1 hour, until firm. Pop out of the moulds to serve.