Cocoa Crackles

1. Preheat oven to 350˚F. Lightly grease cookie sheets. Combine flour, cocoa, salt, and baking soda in a medium bowl.
2. Beat butter, granulated sugar and brown sugar in large bowl with electric mixer until light and fluffy. Add eggs and vanilla; beat until well blended. Add flour mixture; beat just until blended.
3. Place powdered sugar in shallow bowl. Shape heaping teaspoonfuls of dough into balls. Roll balls in powdered sugar; place 2 inches apart on prepared cookie sheets.
4. Bake about 11 minutes or until set and no longer shiny. Cool on cookie sheets 2 minutes. Remove to wire racks; cool completely.