Preheat oven to 350 degrees. Place a cooling rack on a large baking sheet. Set aside.
In a large bowl, mix together all ingredients except the flour and melted chocolate.
Add in all of the flour, and mix until incorporated.
Fold in melted chocolate until just combined. You might have to use your hands to mix the dough to get all of the chocolate mixed in.
Drop by rounded tablespoon on ungreased cookie sheet. Use your fingers to flatten out the cookies.
Bake for 7-8 minutes.
Remove cookies from the oven, and transfer to the cooling rack to cool.
After all the cookies are baked and have cooled off, make the glaze. In a medium bowl, whisk together melted butter, milk of your choice, unsweetened cocoa powder, and vanilla extract. Add in confectioner's sugar, and whisk until smooth. If lumps remain, place bowl in microwave, heat for 20-30 seconds (1000W microwave), and then whisk again until all of the lumps have dissolved.
Pour or spoon the glaze over the cooled cookies. Enjoy!