Cream the butter and sugars

• Beat the softened butter with the brown sugar and caster sugar until pale and fluffy.
• Beat in the egg, egg yolk and vanilla extract until smooth.

Make the cookie dough

• Add the flour, baking soda and salt and mix until just combined.
• Fold in the chocolate chips.

Assemble the pie

• Press half of the dough into the base of the pie dish.
• Spread the chocolate hazelnut spread over the dough and scatter over the chopped Kinder Bueno and hazelnuts.
• Top with the remaining dough and press gently to seal.

Bake

• Bake in a preheated oven at 180 °C until the edges are golden and the centre is just set.

Cool and serve

• Let the cookie pie cool in the dish before slicing.