Jane Dunn served up a delicious gooey chocolate cookie bars traybake on This Morning.

The ingredients are: 275g plain flour, 1 tsp bicarbonate of soda, 1/2 tsp salt, 1 tbsp cornflour, 115 g unsalted butter, 55 g granulated sugar, 135 g light brown sugar, 1 medium egg, 1 tsp vanilla, 250g kinder chocolate (chopped) and 170-250g kinder bueno bars (chopped).

See recipes by Jane in her book titled: Jane’s Patisserie: Deliciously customisable cakes, bakes and treats. THE NO.1 SUNDAY TIMES BESTSELLER available from Amazon now.