Who created Rice Krispies Treats?

Who created Rice Krispies Treats?

Can you believe that Rice Krispies Treats have only been introduced commercially on 15 January 1995 by Kellogg’s?
The original recipe was created by Kellogg’s employees, Malitta Jensen and Mildred Day in 1939. Since then mothers and other companies made the treat till Kellogg’s decided to mass market the treats.