Hack the SONIC Slinger!

The SONIC Slinger Hack is Here Blenditarians, have you heard? SONIC®’s all-new Signature Slinger is the first mushroom-blended burger served at a national fast food chain, and we’re here to help you HACK the Slinger. Available for a limited time, SONIC®’s Slinger blends finely chopped mushrooms, 100% pure beef and seasonings to create a juicy, […]