In many ways, seasoned bread cubes for stuffing are very similar to croutons. One of the key and important differences, though, is the amount of oil or butter used in croutons. Croutons are meant to stand on their own in a salad and are therefore more heavily seasoned including the added oil or butter. Bread cubes for stuffing are flavored but need less added oil and butter and are not meant to stand on their own. They become part of the stuffing mixture.