Place peanuts, peanut butter, raisins, salt, and vanilla extract in a food processor. Pulse until smooth. Roll dough into small balls and place on a cookie sheet lined with parchment paper or waxed paper. Press down with a fork. Chill. These easy no-bake cookies are a great treat to make with the kids- no oven and no sharp knives to contend with. Just make sure the adult handles the food processor!
Optional modification: dust the cookies lightly with coco powder.