4709 Liberty Ave., Pittsburgh, Pennsylvania
What it is: A peanut-butter-and-jelly-centric restaurant.
Why it's cool: This PB&J outpost is serving up some truly inventive takes on the classic lunchtime sandwich. In fact, their signature style is rolled up pieces of bread layered with peanut butter, jelly, and any choice of toppings, including marshmallow spread, cream cheese, and apple butter.
One of the most popular sandwiches is the toasted white bread with crunchy or creamy peanut butter, banana slices, drizzled honey, and bacon, also known as "The Elvis" after the late rock 'n' roll legend.