Add the flour sugar,cocoa,baking soda,baking powder,and salt to a large mixer bowl and combine,set aside add the milk, vegetable oil, vanilla extract and eggs to a medium sized bowl and combine,

All the wet ingredients to the dry ingredients and beat until well combined,divide the batter evenly between the prepared cake pans and bake for 22-25 mins, remove cakes from oven and allow to cool for 2-3 mins

When the cakes have cooled make the chocolate mousse, combine the egg yolks,sugar and heavy cream whisking constantly, it'll be ready when it has thickened, lightened a bit in colour and has more volume,

Frost the all side with the cake, finish off cake with some chocolate sprinkles,then refrigerate until ready to serve