01 -
Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
02 -
Cream butter, brown sugar, and granulated sugar together until smooth.
03 -
Add egg yolk, vanilla extract, and red food coloring. Mix until fully incorporated.
04 -
In a separate bowl, whisk together flour, cocoa powder, baking powder, and salt.
05 -
Add dry ingredients to the wet mixture and mix until just combined.
06 -
Using a tablespoon, scoop out 18 equal dough portions and roll into balls.
07 -
Roll each ball in red sanding sugar and place on the prepared baking sheet.
08 -
Bake for 10 minutes until the edges are set.
09 -
Immediately press a Hershey's Kiss into the center of each cookie.
10 -
Let cookies cool on the baking sheet for 10 minutes, then transfer to a wire rack to cool completely.