01 -
In a mixing bowl, beat softened butter with light brown and granulated sugars until fluffy and well combined.
02 -
Incorporate the egg yolk, vanilla extract, and red gel food coloring into the butter mixture, mixing until uniform in color and texture.
03 -
In a separate bowl, whisk together the all-purpose flour, cocoa powder, salt, and baking powder, then gradually add to the wet mixture, stirring until absorbed.
04 -
Using a tablespoon measure, scoop dough into 18 portions. Roll each into a ball, then coat evenly with red sanding sugar before placing on a prepared baking sheet.
05 -
Bake the cookies at 350°F (177°C) for 12 minutes. Immediately upon removing from the oven, press a Hershey’s Kiss gently into the center of each cookie.