Mix together flour, cocoa powder, baking powder, baking soda, and salt in a bowl
In another bowl, combine melted and cooled butter, granulated sugar, and brown sugar
Add eggs and vanilla extract to the wet ingredients and mix well
Add dry ingredients to wet ingredients and mix until combined
Chill dough for at least 2 hours or overnight
Mix granulated sugar and powdered sugar together for rolling
Scoop dough using a cookie scoop and roll in sugar mixture
Bake at 350°F for 10-12 minutes until edges are crispy
