Mix oil and sugar together
Break/cut apart chocolate into smaller pieces to melt more quickly. Melt in microwave 30 seconds at a time until creamy. Add to sugar/oil mixture
Blend in one egg at a time, mixing well
Add vanilla
Add flour, baking powder and salt all together
Chill in refrigerator for at least 30 minutes. A couple hours is ideal. (The dough will be more "wet" than you think, so this step is important to help the dough "set up" better.)
Use a cookie scoop to scoop dough into small balls and roll in powdered sugar until completely covered and white.
Place on greased cookie sheet at 365 degrees for 8-10 minutes.
The cookies will still look a tad bit doughy. This is what you want. You don't want to overbake these puppies.
Let the cookies rest on the cookie sheet for a few minutes before devouring.