The cake itself shouldn't be forgotten, but a delightfully smooth buttercream can take an ... of two ingredients needed to make an easy peanut butter frosting. Making peanut butter frosting ...

Before starting the frosting, make sure your butter is at room temperature. Softened butter is critical to achieving the creamiest peanut butter buttercream. See my guide on softening butter ...

To make the icing, sift the icing sugar into a bowl ... bowl of a freestanding mixer fitted with a whisk), beat the butter and peanut butter together very thoroughly; that’s to say, for 3 ...