Chocolate cookie pie

For the cookie dough:

200g unsalted butter, softened, plus extra for greasing

325g soft brown sugar

2 medium eggs, plus 1 egg yolk

1 tsp vanilla extract

1 tsp almond extract

425g plain flour, sifted

1½ tsp bicarbonate of soda

½ tsp salt

400g dark chocolate chips

For the filling:

750g chocolate hazelnut spread

200g roasted chopped hazelnuts

200g chocolate-covered wafer biscuits, chopped into cubes