To make the original recipe Kellogg's Rice Krispies treats, melt 3 tablespoons butter over low heat, and stir in one 10-ounce package of marshmallows. Heat until everything melts. Add 6 cups of Kellogg's Rice Krispies cereal, mix to coat the cereal, and press it into a greased 13-inch pan. Cool, cut into squares, and serve.
Variations on the recipe include using one 7-ounce jar of marshmallow creme instead of marshmallows or using Kellogg's Cocoa Krispies instead of Rice Krispies. Alternatively, add 1/2 cup of peanut butter to the melted butter and marshmallow mixture to make Peanut Butter treats.
Chocolate Scotcheroos is a popular variant of the Rice Krispies treats recipe. To make these bars, stir 1 cup light corn syrup and 1 cup sugar over medium heat until the mixture boils, and then remove the mixture from the heat. Add 1 cup peanut butter and 6 cups of Rice Krispies or Cocoa Krispies, and mix the ingredients to coat the cereal. Press the mixture into a greased 13-inch pan, and set it aside to cool. Stir 1 cup semi-sweet chocolate chips and 1 cup butterscotch chips over low heat until melted, and spread over the Rice Krispies treats in the pan. Cool until the mixture is firm, and cut into bars.