Rice Krispies Treats are no-bake bars of crisp puffed-rice cereal bound together with melted marshmallow and a little butter, pressed flat and cut into squares. They need no oven and only a few minutes on the stove, which makes them one of the first sweets American children learn to make. The texture is the whole appeal — light, airy, and crackly-crisp, held in a soft, chewy, sticky-sweet marshmallow web. They are a lunchbox, bake-sale, and party staple, and the base is endlessly customizable.
Rice Krispies Treats were created in the Kellogg's company kitchen by two home economists, Mildred Day and Malitta Jensen, who developed the recipe to help a Camp Fire Girls group raise money; the year is usually given as 1939 but is somewhat contested in the sources. The pair were reworking an older idea of binding puffed cereal with syrup, and chose marshmallow as a tidier, less sticky binder. Kellogg's trademarked the name around 1940 and printed the recipe on Rice Krispies boxes in 1941, after which the bars became a national fixture. Their origin is therefore unusually well documented for a folk-feeling treat — a corporate test kitchen, not an old family recipe.
The bar crackles and crunches the moment you bite, the puffed rice snapping into airy crispness, then quickly gives way to the soft, chewy pull of marshmallow. It is sweet and vanilla-scented, with a faint toasted-cereal flavor and just enough salt and butter to keep it from being cloying. Fresh, it is springy and slightly sticky; left out, it firms and turns chewier and crunchier. The contrast of crisp and gooey in one bite is the entire experience.
This is a candy-style binding, not a baked dough: marshmallow is essentially a sugar-gelatin foam, and gentle heat melts it back into a hot, sticky syrup that coats every piece of cereal. Adding butter keeps the melted marshmallow smooth and stops the sugar from seizing, and as the mixture cools the marshmallow re-sets around the rice, gluing the airy bars together. The cereal must stay dry and crisp, so the marshmallow is melted over low heat and the mix is worked fast before it stiffens; overheating drives off moisture and makes the finished bars hard rather than chewy. Pressing the mixture only lightly keeps air between the pieces, which is what gives the bars their crunch.
Variations
The base invites endless add-ins: chocolate chips, sprinkles, peanut butter swirled into the marshmallow, or a drizzle of melted chocolate on top. Brown butter and a little extra marshmallow make a richer, gooier bar, and toasted cereal deepens the flavor. Other puffed or flaked cereals can replace the rice, and seasonal versions use colored marshmallows or candy mix-ins. Some cooks press them thicker for a softer bar or thinner for more crunch; a sprinkle of flaky salt balances the sweetness.
On the Palate
Where Rice Krispies Treats sits in the American flavor cloud
Ingredients
Serves 12How it's made
8 steps · 10 min active + 10 min waiting
- 12 min
Butter a square pan or line it with parchment so the bars lift out cleanly.
- 22 min
Melt the butter in a large pot over low heat.
- 34 min
Add the marshmallows and stir until fully melted and smooth.
Watch outMelt the marshmallows over low heat only until smooth — overheat them and the finished bars turn hard instead of chewy.
- 41 min
Take the pot off the heat and stir in the vanilla and a pinch of salt.
- 52 min
Pour in the puffed rice cereal and fold gently until every piece is coated.
- 62 min
Scrape the mixture into the pan and press it down lightly and evenly.
Watch outPress the mixture in lightly and evenly — pack it down hard and the bars set dense instead of staying airy.
- 710 min
Let the bars cool and set at room temperature until firm.
- 82 min
Lift out and cut into squares.
Archive tool suggestions — not reviewed
These legacy suggestions have not been evidence-reviewed and are not presented as required tools.
