Here is the vanilla bean buttercream recipe I used with the white on white cake.
Slice open a vanilla bean and scrape out all the little seeds.
Add the vanilla bean seeds and powdered sugar and whip it up.
It’s that easy! You can make this ahead of time or even freeze it. Just make sure you let it sit out and get up to a spreadable consistency before using it. Make sure you put your cake or cupcakes in the refrigerator if you are not planning on eating them right away. The butter will cause this frosting to melt.
Recipe: Vanilla Bean Buttercream