Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large mixing bowl, cream together the unsalted butter, light brown sugar, and granulated sugar until light and fluffy, about 3 to 5 minutes.

Incorporate the eggs one at a time, mixing well after each addition. Stir in vanilla extract and food coloring until uniform.

Sift together the flour, cocoa powder, baking powder, and salt in a separate bowl, then gradually mix into the wet ingredients until just combined.

Roll the dough into uniform balls, about an inch in diameter. Chill for 30 minutes if too sticky.

Coat each ball in granulated sugar, then roll in powdered sugar thoroughly.

Place on the prepared baking sheet, spaced about an inch apart. Bake for 10 minutes until puffed and cracked.

Let cool on the baking sheet for 5 minutes before transferring to a wire rack.