Electric mix butter and sugar.
Add egg and vanilla.
On low add flour, salt and graham crumbs.
Roll dough into balls and press an indent in centers.
Bake 8 minutes.
Fill centers with 4 mini marshmallows and return to the oven 3 mins.
Top each with one piece of chocolate and let sit in oven with door open for 1 more minute.
Remove and spread chocolate carefully with offset spatula.
Cool and DEVOUR!