In a medium bowl, mix the cocoa, granulated sugar, and vegetable oil.
Beat in eggs one at a time and stir in vanilla.
In a separate large bowl, combine the flour, baking powder, and salt; then stir into the cocoa mixture.
Preheat oven to 350° F.
Line baking sheet with parchment paper and roll dough into 1-inch balls.
Coat each ball with confectioners sugar before placing on the baking sheet.
Bake for 10 to 12 minutes.
Transfer cookies to wire rack to cool and enjoy!
