Rice Krispies Treats (also called 'Rice Krispie Treats', 'RKTs', 'bars', 'rice buns', or 'buns' and alternatively 'cakes', 'Marshmallow Treats', 'Marshmallow Squares', or 'Rice Krispies Squares' in Canada, and 'LCMs' in Australia) are a confection commonly made through binding Kellogg's Rice Krispies or another crisp rice cereal together with butter or margarine and marshmallow. Though they are traditionally home-made, Kellogg's began to market the treats themselves in 1995.
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Rice Krispies Treats were invented in 1939 by Malitta Jensen and Mildred Day at the Kellogg Company home economics department as a fund raiser for Camp Fire Girls. Kellogg's began to commercially produce plain and chocolate-based treats under the trademark brand-names of "Rice Krispies Treats" (in the U.S. and Mexico), "Squares" (in Canada, Ireland and the U.K.) and "LCMs" (in Australia and New Zealand) in 1995; however, other manufacturers had offered similar products under variant names (such as "Crisped Rice Treats" or "Marshmallow Treats") prior to this. Kellogg's has also offered a breakfast cereal based on the confection since the 1990s.