Preheat oven to 325 degrees

Using a standing mixer, cream together the butter, sugar and brown sugar

Add in the egg and vanilla and mix until combined

Add in the red food coloring and mix until combined

In a large bowl, mix the flour and cocoa powder until combined

Using a small ice cream scoop, scoop out the dough and roll into a ball

Roll the cookie dough into the red sanding sugar and place onto the cookie sheet

Repeat steps for 11 more cookies

Bake in the oven for 10 minutes

Once cookies are baked, let cool for 2 minutes before placing a Hershey kiss in the center

Repeat steps with remaining dough

Let cookie sit for 20 minutes to cool completely