Soft, Gooey & Packed with Warm Cinnamon Flavor. If you love the sweet cinnamon crunch of your favorite childhood cereal, you’re going to fall in love with these Brown Butter Cinnamon Toast Crunch Marshmallow Bars. This bakery-style twist on classic marshmallow cereal treats is made with rich browned butter, gooey marshmallows, vanilla, and plenty of Cinnamon Toast Crunch cereal for the perfect balance of crispy, chewy, buttery goodness.

You may also like to try my Rainbow Fruit Loop Cereal

Unlike traditional cereal treats, browning the butter adds a rich caramel-like flavor that perfectly complements the cinnamon sugar cereal. Extra mini marshmallows are folded in at the end to create irresistible gooey pockets throughout every bite, while a drizzle of white chocolate and a sprinkle of crushed Cinnamon Toast Crunch make these bars look as amazing as they taste.

Whether you’re making them for after-school snacks, birthday parties, bake sales, holiday dessert trays, or simply because you’re craving an easy no-bake dessert, these marshmallow bars are guaranteed to disappear fast.

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Why You’ll Love These Cinnamon Toast Crunch Marshmallow Bars

• No baking required.
• Thick, soft, bakery-style bars.
• Rich browned butter flavor.
• Gooey marshmallow pockets in every bite.
• Ready in less than 30 minutes.
• Perfect for kids and adults alike.
• Great for parties, lunchboxes, and holiday treats.

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How To Make Brown Butter Cinnamon Toast Crunch Marshmallow Bars

Step 1: Prepare the Pan

Line a 9 x 9-inch baking pan with parchment paper or lightly grease it with butter.

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Step 2: Brown the Butter

In a large pot, melt the butter over medium heat.

Continue cooking until the butter becomes golden brown and smells nutty, about 2–3 minutes.

Be careful not to burn it.

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Step 3: Melt the Marshmallows

Reserve 1 cup of the mini marshmallows.

Add the remaining marshmallows to the browned butter.

Stir constantly until smooth.

Mix in the vanilla, cinnamon, and sea salt.

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Step 4: Add the Cereal

Remove the pot from the heat.

Fold in the Cinnamon Toast Crunch cereal until evenly coated.

Quickly stir in the reserved marshmallows.

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Step 5: Fill the Pan

Transfer the mixture into the prepared baking pan.

Using a lightly buttered spatula, gently press the mixture into an even layer.

Avoid packing it down too firmly to keep the bars soft and chewy.

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Step 6: Decorate

Melt the white chocolate with the coconut oil until smooth.

Drizzle over the bars.

Sprinkle with crushed Cinnamon Toast Crunch cereal and a light dusting of cinnamon if desired.

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Step 7: Cool

Allow the bars to cool at room temperature for about 30 minutes.

Slice into 16 squares and enjoy.

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Tips for the Best Marshmallow Bars

• Brown the butter slowly for the richest flavor.
• Use fresh marshmallows for the softest texture.
• Stir gently to keep the cereal crunchy.
• Don’t overheat the marshmallows.
• Press the mixture lightly into the pan.
• Add extra marshmallows at the end for gooey bites.
• Let the bars cool completely before slicing.

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Frequently Asked Questions

Why are my marshmallow bars hard?

Marshmallow bars become hard when the marshmallows are overheated or when the mixture is pressed too firmly into the pan. Melt the marshmallows gently over medium-low heat and lightly press the mixture into the pan.

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What does browned butter add to marshmallow bars?

Browned butter develops a rich, nutty, caramel-like flavor that pairs beautifully with the cinnamon sugar coating on Cinnamon Toast Crunch cereal.

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Can I make these ahead of time?

Yes! Store the bars in an airtight container at room temperature for up to 4 days.

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Can I freeze Cinnamon Toast Crunch Marshmallow Bars?

Absolutely. Wrap individual bars tightly and freeze for up to 2 months. Thaw at room temperature before serving.

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Can I use large marshmallows instead of mini marshmallows?

Yes. Large marshmallows work perfectly. Cut them into smaller pieces if desired to help them melt more evenly.

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How do I keep marshmallow treats soft?

Use fresh marshmallows, avoid overheating the mixture, and store the bars in an airtight container once completely cooled.

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Can I add white chocolate chips to the bars?

Yes. Fold in about ½ cup of white chocolate chips after the mixture has cooled slightly for an extra indulgent treat.

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What can I serve with Cinnamon Toast Crunch Marshmallow Bars?

These bars are delicious with a cold glass of milk, a cup of hot coffee, hot chocolate, or packed into lunchboxes for a fun afternoon snack.

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More No-Bake Treats You’ll Love

• Maple Pecan Cheerios Marshmallow Bars
• Froot Loop Marshmallow Treats
• Nanaimo Bars
• Chocolate Peanut Butter Bars
• Marshmallow Popcorn Squares
• No-Bake Chocolate Oatmeal Cookies
• Homemade Granola Bars
• Chocolate Coconut Squares

These Brown Butter Cinnamon Toast Crunch Marshmallow Bars are everything a no-bake dessert should be—soft, chewy, buttery, and loaded with warm cinnamon flavor. With rich browned butter, gooey marshmallows, and crunchy Cinnamon Toast Crunch cereal in every bite, they’re a fun, bakery-style treat that’s perfect for sharing with family and friends.