Peanut butter Mousseline!

Last weekend I was asked to make another Princess cake for a 3 year old. O how many princess's we have this world...I have a cake for everyone of them. What do kids like? Peanut butter and jelly, but that would be kinda yucky unless people knew what was coming and Im not sure the parents would be okay with that. So peanut butter and chocolate. Always a favorite! My decision was final, chocolate cake with chocolate ganach and peanut butter mousseline! I got good reviews so I thought I would share the recipe:

Peanut butter Mousseline:
1 c milk
73 g sugar
3 egg yolks
25 g cornstarch
1/2 c peanut butter
1/2 c butter (room temp)
Bring the milk to a boil.
In a bowl whisk (in this order) the yolks and the sugar, then the cornstarch.
(Temper) When the milk starts to boil, remove it and add a little to the whisked yolks, whisk the yolk mix and put the milk back on the stove. Slowly pour the yolk mix into the milk mix while whisking. When it is all added, whisk for 1 full minute and then remove.
Wrap the top of the custard with plastic wrap and place in the fridge till cool. It should look like one big lump after awhile.
Remove and add to a kitchen aid (handmixer optional) with whip attachment.
Start whipping and add the butter in cubes. Add the peanut butter after. Should be able to pipe this!
Now with the recipe above, any flavor is possible. Just substitute the peanut butter for anything you want, Nutella, lemon, orange, etc. Enjoy!