In the bowl of a standing mixer cream together the butter and sugar, add eggs, vanilla and mix until smooth.

Add the cocoa powder, flour, salt, baking powder to the bowl and mix everything to combine.

Refrigerate the dough for at least 4 hours or up to overnight.

Preheat your oven to 350 degrees, line a baking sheet with parchment paper and set aside.

Using an ice cream scoop or two spoons, form little balls of dough and coat them in the powdered sugar. Place them a couple inches apart on your prepared baking sheet.

Bake the cookies for 10 to 12 minutes and allow them to cool before.