A classic red velvet cake traditionally uses cream cheese frosting, not classic buttercream. But this is a TWIST on red velvet cake - not a classic red velvet cake. If an Oreo cake and a red velvet cake came together, this would be the result! I personally prefer buttercream over cream cheese frosting, so that’s how I like to make this cake.  If you have a favorite cream cheese buttercream frosting, you can absolutely replace the Oreo buttercream with your cream cheese buttercream. For a dairy free cream cheese frosting option, check out this vegan cream cheese frosting recipe. For one made with milk ingredients, try this whipped cream cheese frosting.