Preparation Steps

• Preheat oven to 350°F (175°C).
• In a large bowl, whisk together flour, cocoa powder, baking soda, baking powder, and salt.
• In a separate bowl, cream together sugar and shortening. Beat in eggs one at a time.
• Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
• Roll dough out on a lightly floured surface to 1/8-inch thickness. Cut out circles using a cookie cutter.
• Place cookies on a baking sheet lined with parchment paper.
• Bake for 10-12 minutes. Let cool on baking sheet for a few minutes before transferring to a wire rack to cool completely.
• For the filling, cream together butter and powdered sugar until light and fluffy. Beat in milk and vanilla extract.
• Spread filling on the flat side of one cookie and top with another cookie.