Amazing Maltesers cake

Ingredients
200g (1 cup, ) brown sugar
185ml (3/4 cup) milk
125g butter, chopped
115g (3/4 cup) self-raising flour
75g (1/2 cup) plain flour
50g (1/2 cup) cocoa powder
3 eggs, lightly whisked
185g butter, extra, at room temperature
345g (2 1/4 cups) icing sugar mixture
95g (3/4 cup) milk powder
1 tablespoon milk, extra
465g Maltesers
Ganache
300g dark cooking chocolate, finely chopped
125ml (1/2 cup) thickened cream
30g butter
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Method
Step 1
Preheat oven to 160C. Grease a 20cm round cake pan with butter. Line base and side with baking paper.
Step 2
Place the brown sugar, milk and butter in a microwave-safe bowl. Cook in microwave on high, stirring every minute, for 4-5 minutes or until the butter melts and the mixture is smooth.
Step 3
Use a balloon whisk to whisk the combined flour and cocoa powder into the butter mixture. Whisk in the egg. Pour into the prepared pan. Bake for 55 minutes or until a skewer inserted into the centre comes out clean. Set aside in the pan for 5 minutes to cool before transferring to a wire rack to cool completely.
Step 4
To make the ganache, place the chocolate, cream and butter in a microwave-safe bowl. Cook in microwave on high, stirring every minute, for 2-3 minutes or until the chocolate melts and the mixture is smooth.
Step 5
Use an electric beater to beat the extra butter in a bowl until pale and creamy. Beat in the icing sugar, malted milk powder and extra milk until fluffy. Beat in 1 1/2 tablespoons ganache.
Step 6
Set the remaining ganache aside for 1 hour 30 minutes or until thick, glossy and spreadable.
Step 7
Meanwhile, use a large serrated knife to cut the cake horizontally into four layers. Place the cake base on a platter. Spread with one-third of the icing. Continue layering with the remaining cake and icing, finishing with cake. Cover and place in the fridge for 1 hour 30 minutes to chill.