Kellogg's brought out their first Pop Tarts in America in 1964, and they've been a popular part of American breakfast time ever since! Remind yourself of the delicious taste of S'mores, the traditional U.S. and Canadian campfire treat, at breakfast time with this Pop Tart creation. Chocolate and marshmallow filling oozing out from inside a chocolate-frosted graham cracker crust. Odds are, they're tastiest toasted.