01 -
In a large bowl, beat the softened butter, brown sugar, and granulated sugar until fluffy and well combined.
02 -
Add the egg yolk, vanilla extract, and red gel food coloring to the creamed mixture; mix until evenly blended.
03 -
In a separate bowl, whisk together flour, cocoa powder, salt, and baking powder; gradually add to the wet ingredients and stir until just combined.
04 -
Using a tablespoon measure, scoop 18 equal portions of dough, roll each between your palms, then coat evenly in red sanding sugar.
05 -
Arrange the coated dough balls on an ungreased baking sheet and bake at 350°F (177°C) for 10-12 minutes until edges are set but centers remain soft.
06 -
Immediately after removing cookies from the oven, press a Hershey’s Kiss gently into the center of each cookie and allow to cool completely.