Created by Mikekey on January 23, 2016
Step 1: Put oven rack in middle position and preheat oven to 375°F. Line a large baking sheet with parchment paper.
Step 2: Coarsely chop 1 cup pecans and set aside. Pulse remaining 1/2 cup pecans in a food processor with sugar, potato starch, salt, and cinnamon until finely ground (be careful not to pulse to a paste), then stir into egg whites. Stir in remaining cup chopped pecans.
Step 3: Drop 1/2 tablespoons of batter 2 inches apart on baking sheet and bake until cookies are lightly browned and slightly puffed, 15 to 17 minutes.
Step 4: Slide parchment onto a rack and cool cookies completely (cookies will crisp as they cool), then remove from paper. Bake and cool 2 more parchment-lined sheets of cookies in same manner.