Uniformly heatable rollers for a roller grill assembly

A roller grill assembly includes a roller grill housing and a plurality of rollers disposed in an array and rotatably supported by the housing, each roller having an external heating surface, a first opening at a first end thereof and a second opening at a second end thereof. The roller grill assembly also desirably includes heating elements provided in the rollers for heating the external heating surfaces, and a first insulating end cap secured in the first opening of each roller and a second insulating end cap secured in the second opening of each roller for minimizing heat loss through the ends of the rollers.