Don't knock it until you try it. While a peanut butter and chili sandwich is outlined in a cookbook from 1939, some peanut butter lovers have taken it upon themselves to separate the ingredients and serve peanut butter sandwiches alongside warm bowls of chili. The earthy, nutty flavor of peanut butter provides a smooth complement to heat. "I prefer spicy chili, so the PB sandwich helps take away the heat and gives a sweet break-up as well," explained a Redditor.