Doing a GIS on Zombie Cupcake produced some interesting results. The brain-cake seemed too unpalatable to pull off, and I didn't have the right sculpting materials for the hand-rising-from-the-grave cake. I had marshmallows, some black frosting, and two children. Apparently, that was all I needed.
An important note about black cake frosting, it's actually concentrated dark green. When my kids started painting the frosting onto the marshmallows with one of their (clean) art-set paintbrushes, it gave the marshmallow a very dark-green, undead tint - perfect for zombieheads.
Happy Halloween, my friends.