Malted Milk Sheet Cake:

1. In a saucepan, dry caramelise the sugar then deglaze with boiling water
2. Pour the caramel over the chocolate and cocoa and whisk together
3. In a mixer, cream the butter cream cheese and brown sugar
4. Add the eggs one at a time
5. Add chocolate caramel mix
6. Add the dry ingredients
7. Pour into lined and greased baking tray and refrigerate

Chocolate Custard:

1. Heat the milk in a saucepan
2. Pour over the sugar, malted milk, cornflour and agar agar and whisk continuously
3. Pour mix back into the saucepan and whisk until thick
4. Add the chocolate, butter and cocoa mass and whisk until melted
5. Pour the custard over the cake layer

Hazelnut Crumble:

1. Place all ingredients into a bowl and use your fingers to mix together to create a crumble texture
2. Sprinkle the mix over the custard and cake layer
3. Bake at 160 degrees celsius for 40 minutes