PRAIRIE DU SAC, Wis. – Culver's new Three Cheese ButterBurger features cheeses all made in Wisconsin: Cheddar (Kiel, Wis.), Swiss (New Berlin, Wis.) and American (Manitowoc County, Wis.). These limited time only offerings will be offered through May 1.

Culver's operates more than 428 independently owned and operated restaurants in 19 states.