200 gm dark chocolate (70% cocoa solids), coarsely chopped
70 gm (¾ cup) pistachio kernels, plus extra to serve
150 gm softened butter
150 gm caster sugar
3 eggs
150 gm (1 cup) plain flour, sieved
1 tsp baking powder
1 Packham pear, cored and coarsely chopped

150 gm dark chocolate (70% cocoa solids), coarsely chopped
150 ml pouring cream

Preheat oven to 160C.
Process chocolate and pistachios in a food processor until coarse crumbs form, set aside.
Beat butter and sugar in an electric mixer until light and fluffy (2-3 minutes).
Add eggs one at a time, beating until well combined, then stir in flour and baking powder.
Stir through pistachio and chocolate mixture, then pear, pour into a 22cm-diameter springform cake tin greased and lined with baking paper.
Bake until an inserted skewer withdraws clean (30-40 minutes), cool in tin for 10 minutes, turn out and cool to room temperature on a wire rack.

Meanwhile, for chocolate ganache, place chocolate in a heatproof bowl and set aside.
Heat cream in a saucepan over medium heat to just below boiling, add to chocolate, stand until chocolate melts (3-5 minutes), then stir until smooth, set aside until slightly thickened (5-10 minutes).
Smooth over top and sides of cake, scatter with pistachios, set aside to set (20-30 minutes), then serve.
Cake will keep, stored in an airtighter container, for 3 days.