I found the inspiration on Pinterest, which led me to Martha Stewart.
You will need mini pumpkins, plastic vampire teeth and a red Sharpie marker. Simply cut out a rectangle-roughly the width of the vampire teeth- scoop out the seeds and pulp, and shave down the sides so that the teeth will slide all the way in. Draw two red eyes and you are done! [Martha used map tacks for the eyes and provided a template for the mouth….but I went rogue.]