This Ghostly Graveyard Cake takes imagination and creativity from everyone with tombstones, skulls and spooky icing daring all to try a bite. Ghostly Graveyard Cake Ingredients1 box chocolate cake mix10 chocolate creme cookies1 cup black melting chips1 cup red melting chips1 cup heavy whipping cream3 cans buttercream icing1 purple food coloring1 black food coloringskull sprinklestombstones and bones candies Photo source culinarynet1. In separate small bowls, add black melting chips and red melting chips. After cakes cool, on cake board, add small amount of buttercream icing so cake sticks. Place one cake on cake board and add thin layer of icing on top.