Preheat your oven to 350°F (175°C).
In a bowl, whisk together the flour, cocoa powder, baking soda, and salt.
In a separate bowl, cream the softened butter and granulated sugar until light and fluffy.
Add the egg, milk, vanilla extract, and food coloring to the butter mixture, mixing until well combined.
Gradually mix the dry ingredients into the wet mixture until just combined.
Scoop tablespoon-sized balls of dough onto a baking sheet lined with parchment paper, spacing them about two inches apart.
Bake the cookies for 10-12 minutes or until the edges are set and the tops are slightly glossy.
Remove from the oven and allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack.
Prepare the cream cheese frosting by beating the softened cream cheese and powdered sugar until smooth.
Spread a generous amount of cream cheese frosting on top of each cooled cookie.
