Happy Burger delivers on its promise of “serving up fresh smash burgers and dogs -- the happy way” from its no-frills Little Italy restaurant. The joint specializes in cooked-to-order smash burgers, which are served on toasted Martin’s potato rolls loaded with their signature Happy Sauce. Aside from its staple Happy Burger, the restaurant offers various other simple but satisfying handhelds, including a fried chicken sandwich, hot dogs and plant-based burgers. They also do essential burger sides like waffle fries and onion rings. Happy Burger is mainly a takeout restaurant, although a few picnic tables in front of its storefront offer seating in the warmer months.