Preheat oven to 375 degrees F.
Make the cookies: In a large bowl, combine butter and brown sugar. Use an electric mixer to cream the two until they're light and fluffy, about a minute. Scrape down the sides and beat in the egg and vanilla.
Add flour, baking soda, salt, cinnamon, cloves and oats, mixing on low until combined. Fold in chocolate chips. Scoop the dough into one-inch balls and place about two inches apart on a parchment-lined baking sheet. Bake for 8 to 9 minutes, or until lightly golden. Let cool.
Make the creme filling: In another large bowl, combine butter and confectioners' sugar. Use a clean electric mixer to cream the butter and sugar, about one minute. Add heavy cream, vanilla and salt, mixing until light, fluffy and spreadable, about one minute more.
Decorate half the cookies: Match up similarly sized cookies. Designate one as the "face" of the cookie. Set aside.
Cut mini marshmallows in half and coat in silver Color Mist or edible paint. Set aside.
Place chocolate in a microwave-safe bowl and microwave in 20-second intervals, stirring in between, until fully melted and smooth. Add to a resealable plastic bag, snip off a corner, and use to pipe on Chewie faces or the bandolier belt. Top each chocolate belt with a row of marshmallows.
Assemble the cookies: Spread creme filling on half and top with the matching cookies. Serve.
