Mix 1 cup cocoa powder, 2 cups of sugar, and 1/2 cup of vegetable oil with a spatula

Add 1 egg to the cocoa mix and use electric mixer to beat the egg, do this 4 times (1 egg at a time)

Add 2 tsp vanilla extract, mix again with electric mixer

In a separate bowl, add 2 cups of flour, 2 tsp of baking powder, 1/2 tsp of salt, then stir until combined

Pour the dry ingredients (flour mix) into the cocoa mixture, fold with spatula until everything is fully mixed

Cover the dough with cling wrap and refrigerate for at least 4 hrs

Preheat oven to 350°F (190°C), lie baking sheets on the pan

Shape the cookie dough into 1 inch balls, coat each ball in confectioners sugar, place them onto the baking sheet, with 1 inch gap between the balls

Bake for 10-12 minutes, let cool and serve