Phil Vickery served up deliciously naughty millionaire’s shortbread on This Morning.

The ingredients are: 125g soft plain flour, 70g cornflour, 125g soft salted butter, 40g caster sugar and 40g icing sugar.

For the filling: 150g salted butter, 150g dark brown soft sugar and 397g can condensed milk.

For the topping: 300g bitter chocolate, melted.

For the decoration: 100g melted milk chocolate and 100g melted white chocolate.

Seriously Good! Gluten-free Baking: In Association with Coeliac UK