Preheat your oven to 350°F (180°C).
In a medium bowl, whisk together the flour, cocoa powder, baking powder, baking soda, and salt.
In a large mixing bowl, beat the butter and sugar together until light and fluffy, about 3 minutes.
Add in the eggs, one at a time, and mix well after each addition.
Mix in the vanilla extract and red food coloring.
Gradually add in the dry ingredients, alternating with the buttermilk, until the mixture is well combined and smooth.
On a lightly floured surface, roll out the cookie dough to 1/4-inch thickness.
Using your favorite cookie cutters, cut out shapes from the dough and place them on a parchment-lined baking sheet.
Bake the cookies for 10-12 minutes, until they are set but not browned.
Allow the cookies to cool on the baking sheet for 5 minutes, then transfer them to a wire rack to cool completely.