2. Add egg and vanilla extract. Scrape down bowl to full incorporate.
3. In a separate bowl, sift flour, cocoa powder, baking soda and salt together.
4. Add dry ingredients to butter mixture and mix until combined.
5. Add mini chocolate chips (optional).
6. Make dough balls roughly the size of a table spoon each and place in the freezer for 30 minutes.
7. Preheat oven to 350 degrees and bake cookies for 8-10 minutes.
8. Remove from pans and let cool on cooling racks.
9 Coconut Filling: Beat butter and cream cheese until smooth, Add coconut extract and slowly add powdered sugar until you reach your desired consistency.
10. Frost the bottom of half the cookies, place another cookie on top to create your "sandwich."
11. Place shredded coconut in a bowl and roll the edges of the cookie sandwich into the coconut.