Macadamia and bush honey slice - Australian Macadamias

Ingredients

• 200 g dark chocolate
• 100 g unsalted butter
• 2 eggs (lightly whisked)
• 150 g caster sugar
• 1 cup plain flour (sifted)
• 1/4 cup cocoa powder (sifted)
• 1 cup unsalted macadamias (toasted, roughly chopped)
• 2 cups macadamia butter*
• 1 3/4 cups icing sugar
• 4 tbsp bush honey
• 2 tbsp milk
• 200 g milk chocolate
• 1/2 cup unsalted macadamia nuts (extra, toasted and finely chopped)