Spray a 6 inch round cake pan with
non-stick spray.
Cut a 6 inch parchment paper circle and place in the bottom of the pan. Spray again with non-stick spray.
Pour the cake batter into the pan.
Bake 40 minutes.
Let the cake cool for 10 minutes
in the pan.
Remove from the pan, discard the parchment paper, and place the cake on a cooling rack to cool completely.
In the bowl of a stand mixer, cream the butter and cream cheese until nice and fluffy using the paddle attachment.
Add in the vanilla and powdered sugar and mix until smooth and creamy.