Bake cake according to directions for 9” x 13” cake. Cool 10 minutes in the pan, then turn out onto the surface where the cake will be decorated and displayed. Let cool completely.
Fill piping bag or plastic bag bag and cut a a corner out and Pipe buttercream in large rows.
Then microwave the chocolate frosting for about 25 seconds, reserving a small amount of frosting to use later to write on the gravestones. Stir and pour over entire cake.
Crush Oreo's and sprinkle over chocolate frosting layer.
Then fill a small bag with the reserved chocolate frosting and cut a tiny hole (or if using a writing tip) and decorate Vienna cookies with "R.I.P" etc.
Push decorated cookies down into the buttercream rows.
Add candy pumpkins, gummy worms, and any additional decorations.
Be proud, display, and serve!
