Kellogg's Rice Krispies breakfast cereal snack bars contain All of the great taste of Kellogg’s Rice Krispies Cereal combined with a milky layer to create an easy to eat cereal bar. Rice Krispies Cereal Bars are the perfect way to enjoy our classic toasted rice cereal on-the-go. These bars are perfect for an on-the-go snack. Kellogg's Rice Krispies breakfast cereal bars are a source of calcium and vitamin D and contain no artificial colours, flavours, or preservatives. Enjoy the taste of Kellogg’s Rice Krispies Cereal with our Rice Krispies cereal snack bars.