"These cookies are so good and so easy to make! They are a favorite of ours. The recipe came from the WWII era. They were made by my great-grandmother."
1Preheat oven to 250 degrees F (120 degrees C). Line a baking sheet with parchment paper.
2Beat the egg whites with an electric mixer until light and frothy; beat in sugar, about 1 tablespoon at a time, until incorporated. Continue beating until the mixture is thick and shiny, 1 to 2 more minutes. Lightly fold in the walnuts. Drop by heaping teaspoonful onto the prepared baking sheet.
3Bake until dry to the touch, about 40 minutes. Cool thoroughly.