Have you Heard the great news? Killer Burger is expanding in Washington State. An agreement with Cascade Dining will have 6 new burger joints operating in the South Puget Sound region. Over the next 5 years, Killer Burger restaurants will be operating in Puyallup, Tacoma, and Olympia. In addition to Cascade Dining’s first Killer Burger in Salem, OR, this new deal doubles their original agreement to 12 restaurants across WA, OR, and ID. According to Killerburger.com: