From cookie dough restaurants to all-avocado eateries, foodie favorite spots across the country are embracing the hyper-focused trend of menus specializing in only one thing. The latest on the line-out-the-door list? Chicago's XO Marshmallow, a sweet online biz that's about to open its first brick-and-mortar location.

Thanks to a successful Kickstarter campaign, co-founders Lindzi Shanks and Kathryn Connor will be bringing their fluffy creations to life inside the first-ever marshmallow cafe, serving up everything from s'mores (duh) to marshmallow lattes. If you've ever scooped out the good stuff from a box of Lucky Charms, we're sensing a quick trip to the windy city in your future.

Click through for a glimpse at some of XO Marshmallow's inventive offerings!

[Photo via @xo.marshmallow]