Make the cookie version of the gingerbread recipe according to the package instructions.
Scoop dough with a soup spoon and roll into ping pong-sized balls.
Roll your ball in granulated sugar.
Put balls on a cookie sheet lined with parchment paper. Don’t flatten the balls.
Cook for the minimum time recommended on the package. Let cool completely.
Cut a hole in one corner of a zip lock bag. Push a large piping tip though the hole. Scoop in your frosting.
Pipe onto the flat side of your gingerbread cookie.
Sandwich another cookie on top.