Buy the book "Creepy Cuisine" by Lucy Monroe.

You can take some ordinary foods and relabel as them something creative:

1. Ribs with lots of barbeque sauce.
2. Baked potatoes with chili ladled over for shrunken heads with brain sauce.
3. Spaghetti for your basic guts. A twist on this would be to put brussel sprouts in the sauce instead of meatballs. People won't be able to tell the difference until they bite into them.
4. Fill your candy dishes with Black Jellybeans, Mellowcream pumpkins and candy corn. Drape gummy worms over the sides o the candy dish for effect.

More cookie ideas:

1. Bake brown sugar cookies in pumpkin-shaped stoneware cookie molds (Brown Bag Cookie Molds).
2. Make sugar cookie cut-outs with pumpkin-shaped cookie cutters and sprinkle with orange decorator sugar.