National Raisin Bran Cereal Day is enjoyed November 15th. Since 1926, raisin bran cereal has been manufactured by a number of different companies under a variety of brand names, including Kellogg’s Raisin Bran, General Mills, Total Raisin Bran and Ralcorp’s Post Raisin Bran. US Mills introduced Skinner’s Raisin Bran to the United States in 1926, which was the first brand on the market. A good source of dietary fiber, raisin bran cereal is the star of the day, not just at breakfast, but all day.