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Kellogg's

The Original Rice Krispie Treats

Adapted from the original Kellogg's Rice Krispies Cereal packaging. Back of the Bag is not affiliated with Kellogg's.

"Snap, crackle, pop — and one bowl, three ingredients."

Prep 10 min Cook 5 min 24 bars
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The Original Rice Krispie Treats

The Story

Invented in 1939 by Mildred Day in the Kellogg's home-economics test kitchen as a Camp Fire Girls fundraiser, this three-ingredient marvel landed on the side of every Rice Krispies box in 1941 and never left. It is, by a wide margin, the most-cooked back-of-the-box recipe in American history.

From the back of Rice Krispies Cereal — since 1939

Ingredients

  • 3 tablespoons butter
  • 1 package (10 oz) regular marshmallows (or 4 cups miniature)
  • 6 cups Rice Krispies cereal
  • Cooking spray, for the pan

Directions

  1. 1

    Lightly coat a 13x9-inch pan with butter or nonstick spray.

  2. 2

    In a large saucepan, melt the butter over low heat. Add the marshmallows and stir until fully melted and smooth. Remove from heat.

  3. 3

    Stir in the crisped rice cereal until every piece is coated.

  4. 4

    Press the mixture evenly into the prepared pan using a sheet of wax paper or buttered hands.

  5. 5

    Let cool to room temperature, then cut into squares.