Hazelnut chocolate brioche

Brioche

• 180 g full cream milk
• 60 g white sugar
• 1 tsp dried instant yeast
• 60 g unsalted butter, melted
• 450 g baker's flour
• 1 tsp salt
• 2 eggs, lightly beaten
• 300 g hazelnut chocolate spread (see Tips)

Glaze

• 1 egg yolk
• 15 g full cream milk
• icing sugar, to serve (optional)