Step 1

Mix together the flour, dark cocoa powder, baking soda, baking powder, and salt in a medium bowl. Set aside.

Step 2

Cream the butter and sugar together in a mixer on medium speed.

Step 3

Add the eggs one at a time, then the vanilla.

Step 4

Lower the speed and gradually add the dry mixture to the wet ingredients in the mixer until well combined. The dough will be very thick.

Step 5

Wrap the dough in plastic wrap and refrigerate for at least an hour to chill the dough.

Step 6

When you are ready to bake, preheat oven to 350°F.

Step 7

Roll the dough into 1-inch balls and place dough balls 2-inches apart, as cookies will spread while baking.

Step 8

Bake for 8-10 minutes. Transfer to a cooling rack.