Preheat your oven to 350°F (175°C).
Cream together butter and sugar in a bowl.
Add vanilla and mix in graham cracker crumbs, flour, baking soda, and salt.
Stir in chocolate chips and mini marshmallows.
Scoop dough onto a baking sheet, forming balls.
Bake for 10-12 minutes, until golden brown.
For the iced latte, brew coffee and chill it.
Fill a glass with ice and pour in the chilled coffee.
Add milk and sugar, then stir.
Serve with the cookies on the side.