Its M&Ms chocolate bar is made with milk chocolate and contains fragments of multicolored M&Ms.
Roy Benin, chief consumer officer for Mars Chocolate North America, said: "It's only natural that we infuse the brand's colorful personality and irresistible milk chocolate center into a classic confection like the chocolate bar."
Mars will sell the product in club, convenience, drug and grocery stores as well as mass, specialty, value, and vending channels.
Single 1.5 oz bars have a suggested retail price of $1.09.
Button-shaped M&Ms were the original answer to non-melting chocolate when the hard-panned confections were introduced in 1941.