1 C cocoa
2 C sugar
1/2 C oil
4 eggs
2 t vanilla
2 C flour
2 t baking powder
1/2 t salt
1/2 C powdered sugar
Combine cocoa, sugar and oil. Beat in eggs and vanilla. In a second bowl, combine flour, baking powder, and salt. Stir the dry ingredients into the cocoa mixture. Chill dough for a few hours until firm.
Preheat oven to 350 F. Make small balls and roll each one in powdered sugar. Place on greased cookie sheets and flatten slightly. Bake for about 10 minutes. Allow to cool a bit before transferring them from the cookie sheets to a wire rack.