Nothing feels more magical than a thick chewy sugar cookie decked out in rainbow marshmallows and gold luster dust. These lucky charms sugar cookies have a little bit of oat flour and cereal flour to amp up the texture and depth of the sugar cookie. I also added a bit of bread flour as well to create a thick soft chewy cookie that stays soft for days.  The marshmallows though, they are the real stars. They make this cookie taste so nostalgic and just plain magical. The marshmallows inside the cookie become chewy and sticky while the marshmallows outside remain crunchy just like the ones in the box. A dusting of golden luster dust makes these cookies look like they are they type of cookies you’d find on the other side of the rainbow.