Preheat oven to 350°F (175°C). Line baking sheets with parchment paper or silicone mats.
Whisk together flour, baking powder, and salt in a bowl. Set aside.
In a separate bowl, mix cocoa powder, granulated sugar, brown sugar, and oil until smooth.
Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.
Gradually mix in the dry ingredients until fully combined.
Cover dough and refrigerate for 30–45 minutes until firm enough to scoop.
Scoop dough into 1¼-inch balls and roll generously in powdered sugar.
Place cookies 2–2½ inches apart and bake for 10–11 minutes until crackled and soft-centered.
Cool briefly on baking sheet, then transfer to a wire rack to cool completely.
