Preheat the oven to 350 degrees.

In a large bowl cream together the butter and brown sugar.

Add in the egg, vanilla, and a few drops of red food coloring. Mix well.

Add in the flour, cocoa powder, baking powder, and salt. Mix well.

Using a tablespoon roll the dough into 18 equal sized balls.

Roll each ball into the sanding sugar and place on the cookie sheet 2 inches apart.

Use the base of a glass press the dough balls down slightly.

Bake for 10 minutes. Remove from the oven and press a Hershey's Kiss into the center.

Allow the cookie to cool on the baking sheet for 5 minutes then remove to a wire rack to cool completely.