1. Preheat oven to 325 degrees F. Grease baking sheets or line with parchment paper or silicone baking sheet liners.
2. In a small bowl, combine coconut, sugar, flour and salt. Beat egg whites with a fork until slightly frothy. Add egg whites and vanilla to coconut mixture. Stir well to mix.
3. Drop by rounded teaspoonful onto baking sheet. Bake for 18 to 20 minutes or until golden brown. Remove from baking sheet and cool on wire rack. Makes about 18 cookies.
Adapted from recipe by TasteofHome.com