Cinnamon Toast Crunch Marshmallow Bars: Gooey Cereal Treats

Cinnamon Toast Crunch Marshmallow Treats are a simple, no-bake dessert that’s sweet, sticky, and packed with cinnamon flavor. They come together quickly and are perfect for school lunches, parties, or an easy snack that disappears fast.

My kids love Cinnamon Toast Crunch, and one day I turned a box of cereal into a marshmallow treat. A few minutes of stirring later and these gooey bars were ready — and they were gone just as quickly.

Why I love this recipe

The contrast between the ooey-gooey marshmallow and the crispy cereal is irresistible. These treats have the same nostalgic appeal as classic rice crispy bars, but with a warm cinnamon kick. Best of all, they require no baking and only a few minutes to prepare, making them a reliable crowd-pleaser.

Ingredients

Gather three everyday ingredients—no special items needed.

• Cinnamon sugar cereal (Cinnamon Toast Crunch)
• Mini marshmallows
• Butter or margarine

Step by step

No fancy equipment required—just melt, mix, and press. These bars come together in minutes.

1. Lightly coat a baking dish with nonstick cooking spray and set aside.
2. Place the marshmallows and butter in a large heatproof bowl.
3. Microwave until the marshmallows puff up, then stir until the mixture is smooth and combined.
4. Quickly add the cereal and stir until every piece is evenly coated.
5. Transfer the mixture to the prepared dish and press it down firmly and evenly (coat your hands or a spatula with nonstick spray to prevent sticking).
6. Allow the bars to cool and firm up for about an hour, then slice into squares and serve.

Tips for Best Results

• Use fresh marshmallows for a soft, gooey texture—stale marshmallows can yield drier, firmer bars.
• Lightly coat your hands, spatula, or measuring cup with nonstick spray when pressing the mixture into the pan to prevent sticking.
• Don’t overheat the marshmallows. Once melted, remove them from heat and stir; overheating can make the bars dense and chewy.
• Let the bars cool completely before slicing to get clean, even pieces.

Variation

Customize the bars with a few simple add-ins: stir in cinnamon chips, toss in a handful of chocolate chips, drizzle melted chocolate over the top, or sprinkle a pinch of flaky sea salt for contrast.

Storage

Store the bars in an airtight container at room temperature to preserve their chewy texture. Refrigeration can make them firm and less pleasant to eat. If you freeze them, thaw to room temperature before serving for the best texture.

If you try this recipe, please leave a comment and a rating — feedback is always appreciated!

Cinnamon Toast Crunch Marshmallow Treats

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• Author: Melissa Riker
• Total Time: 1 hour and 7 minutes
• Yield: 12 treats