NILLA WAFERS are thin, round vanilla-flavored wafer cookies sold as a packaged grocery product. They are widely used as a snack straight from the box or as an ingredient in recipes such as banana pudding, pie crusts, trifles, and layered desserts. The crisp texture holds up well when layered with creams and puddings. Keep stored in a cool, dry place and consume by the best-if-used-by date on the package.