The deal seems to be a favorite one as far as Sonic is concerned, as they've offered it several times this year.
A Sonic Cheeseburger includes American cheese, crinkle-cut pickles, chopped onions, shredded lettuce, and sliced tomatoes on a beef patty with your choice of mustard, mayo or ketchup. They normally go for around $3.29. You can find my previous review of one here.
Photo via Sonic.
