Looking for a delicious holiday cake? This Peppermint Fudge Cake will have everyone raving. I made it a few years ago for the family for Christmas and it was a huge hit. Filled with a layer of airy peppermint mousse (made from white chocolate, whipping cream, sour cream, and peppermint candies), and enrobed in chocolate ganache, it's a decadent holiday dessert. Mmmm…I'm getting hungry just thinking about it!