The present disclosure describes a bun having a pair of cavities formed therein. The cavities include inner walls which are browned. The cavities form segregated areas which are suitable for receiving separate fillings for making a sandwich. The bun has an insulating wall separating adjacent cavities. The insulating wall may be thicker than the other walls in the bun or may further contain cavities or through-holes to further reduce thermal transfer between any fillings with different temperatures that may be located in the cavities. The browned inner walls in each of the cavities help prevent the bun from getting soggy.