1) In a mixing bowl, mix together vegetable oil, sugar, and vanilla extract.

2) Add eggs one at a time; mix until well combined.

3) Mix in the cocoa powder.

4) Add the flour and baking powder; mix until smooth.Chill the dough for at least 4 hours in the refrigerator.Preheat oven to 350 F.Line a cookie sheet with greaseproof paper or a nonstick silicone mat.Scoop out a dough using an ice cream scooper and roll generously in confectioners sugar.

5) Place on the cookie sheet each at 2 inches apart.

6) Bake for 12 minutes.

7) Let cool.