You’ll be in costume. Your food should be, too.
Pumpkin Patch Pudding Cups with Oreo Full Moons
Can you even stand it? Recipe here.
Deviled Egg "Eyeballs"
Just make regular deviled eggs (here's how), the top with a slice of black olive and a caper, and streak them with red food coloring.
Shuck oysters, reserve juices, pour everything into a tall pitcher. Definitely scary. Instructions here.