Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius). Grease and flour a Bundt pan; set aside.

In a small bowl, combine all cookie dough ingredients to form a crumbly dough; set aside.

In a mixing bowl, combine eggs, oil, sugar, baking powder, baking soda, vanilla extract, and salt. Whisk until smooth. Add cocoa, flour, and milk. Whisk until a batter forms.

Pour half the batter into the prepared Bundt pan. Spread cookie dough mixture over it, then top with remaining batter. Bake for about 50 minutes, until center feels firm.

Allow to cool for 20–30 minutes, then remove from pan. Set aside to cool completely before dusting with confectioners’ sugar.