Cooking oil spray, to grease
4 free-range eggs
1 3⁄4 cups caster sugar
1 cup plain flour
1⁄2 cup cocoa powder
250g dark chocolate, melted
3⁄4 cup light flavour extra virgin olive oil
50g dark chocolate, roughly chopped
50g white chocolate, roughly chopped
50g milk chocolate, roughly chopped
1⁄2 cup macadamias, roughly chopped
Put eggs and 1⁄4 cup of the sugar in the bowl of an electric mixer and beat on high, using whisk attachment, for 3 minutes or until thick and pale. Gradually add remaining sugar, beating constantly, for 5 minutes or until thick and glossy.
Sift flour and cocoa into egg mixture. Pour in melted dark chocolate and oil. Using a hand whisk, gently stir to combine. Pour 1⁄3 of the batter into prepared pan.
Stir chocolates and macadamias into remaining batter then pour into pan. Bake for 35 minutes or until a crust forms on top but centre is still moist. Set aside for 2 hours to cool to room temp.
Turn out brownie onto a wire rack then immediately flip so smooth-side up. Cut into pieces and serve.