Preheat the oven to 350 degrees and two cookie sheets with parchment paper

In a large bowl, mix together the cake mix, eggs and oil until combined and smooth

Using the ice cream scooper, scoop out some dough and place it onto the cookie sheet about 2 inches apart from each other

Bake in the oven for 8-10 minutes

Allow to cool for a few minutes before removing cookies and placing onto a wire rack

Repeat steps until all dough is baked

Using a medium sauce pan, combine the butter, cocoa powder and whole milk over medium heat

Whisk together until combined and smooth

Remove from the heat and slowly whisk in the powder sugar until smooth

Place a cookie sheet under the wire rack to catch excess chocolate

Scoop out a spoonful of icing and pour over the cookies