In a stand mixer with the paddle attachment, beat the butter until light and fluffy.
Add the powdered sugar and mint extract. Mix until combined and fluffy.
Add the cocoa powder, flour and salt to the mixer and stir to form a sandy mixture. Add the water and mix again to make the dough stick together better.
Roll the dough to 1/4 inch thickness, place on a parchment paper lined sheet pan, and cover with another sheet of parchment paper.
Refrigerate for 1 hour.
Preheat the oven to 350℉.
Once the oven is ready, remove the dough from the refrigerator and cut 12 circles with the biscuit cutter.
Reroll and refrigerate the dough until the first batch is close to being ready to come out of the oven.
Place the cut out cookies on a parchment paper lined sheet pan and bake for 13-15 minutes.
Remove the pan from the oven and repeat with the next two pans of cookies.
Cool the cookies on a wire rack for at least 30 minutes.
Once all the cookies are cooled, heat a bowl of chocolate chips in the microwave until they are melted completely.
Add the coconut oil and mint extract and stir to combine.
Place all of the cookies on a parchment paper lined sheet pan and drizzle the chocolate sauce over the top of the cookies.