Adapted from House of Nash Eats
Preheat oven to 350 degrees and line cookie sheets with parchment.
Mix together butter and sugars until light and fluffy.
Add eggs and vanilla and mix well.
Whisk together flour, special dark cocoa powder, baking soda and salt.
Add the flour mixture to the butter/sugar mixture and mix until just combined.
In a small bowl, stir together all the chips and candy. Leave about 1/2 cup to the side for after baking.
Fold the chips into the batter until evenly distributed.
Refrigerate dough for 30 minutes - 1 hour.
Roll dough into balls and place on cookie sheets about 2 inches apart.
Bake for 8-10 minutes.
When cookies are removed from oven, add a few of the reserved chips to your cookies.
Place on wire rack to cool completely.