Step 1

***FOR THE COOKIES:

Step 2

Preheat oven to 350 degrees F.

Step 3

Combine all dry ingredients (flour, cocoa, soda, powder, salt) in a small bowl.

Step 4

In a large bowl, cream together butter and sugar until light and fluffy (~3 minutes). Scrape down sides and add egg. Add dry ingredients, mixing only to combine.

Step 5

Scoop into rounded teaspoons (or tablespoons for extra large cookies) one inch apart on a baking sheet.

Step 6

Bake for 10 minutes, rotating pan front to back midway through. Allow to cool completely.

Step 7

***FOR THE FILLING:

Step 8

Mix together all filling ingredients until light and fluffy.

Step 9

***FOR ASSEMBLY:

Step 10

Match individual cookies and place ~1/4 tsp of filling on one half (1 teaspoon for extra large cookies), sandwiching the other to form each cookie.