Preheat oven to 325°F and line two cookie sheets with parchment paper.
Whisk flour, cocoa powder, baking powder, and salt in medium bowl. Set aside.
Place eggs, vanilla extract, 1½ cups sugar, and vegetable oil in large bowl. Stir together until fully combined.
Heat chocolate in microwave-safe bowl for 2 minutes or until fully melted. Stop to stir every 30 seconds.
Add chocolate to egg mixture. Mix for 30 seconds.
Add flour mixture to egg mixture. Mix on low until fully combined.
Cover and refrigerate for at least 45 minutes.
Roll into 1” balls.
Roll balls in ¼ cup granulated sugar, then in powdered sugar, and place on cookie sheet.
Bake cookies for 12-14 minutes until they are crinkled. Place the pan on a wire rack and let cool.