01 -
Preheat the oven to 350°F (175°C) and line baking sheets with parchment paper.
02 -
In a bowl, whisk together the flour, cocoa powder, and salt. Set aside.
03 -
In a separate bowl, cream together the softened butter and granulated sugar until light and fluffy.
04 -
Mix in the vanilla extract and milk until well combined.
05 -
Gradually add the dry ingredient mixture to the wet ingredients, mixing until a dough forms.
06 -
Roll the dough into a log about 1 to 1.5 inches in diameter. Wrap in plastic wrap and chill in the refrigerator for about 30 minutes.
07 -
Once chilled, slice the log into thin rounds.
08 -
Place the cookie rounds on the prepared baking sheets and bake for about 8-10 minutes, or until the edges are set. The cookies will firm up as they cool.
09 -
Allow the cookies to cool on a wire rack. Once completely cooled, store them in an airtight container.