"Wafer cookies" refers to thin and crisp biscuits that are often layered with a sweet filling. They are typically eaten as a snack or used in desserts and have a delicate texture. Full definition
Mix the chocolate wafer cookie crumbs with 2 tablespoons of the white sugar, and the melted butter. (piarecipes.com)
Instant vanilla pudding is the base then kids can layer fresh bananas with vanilla wafer cookies for a no - bake (and even, no - microwave) dessert that they will love. (thespruce.com)