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Marshmallow Treat made with Berry Cereals

Marshmallow Cereal Bars Recipe

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This super fun kids treat is made from 3 simple ingredients – Baby Shark Cereal, Marshmallows and Butter and is perfect for all occasions!

This is a sponsored conversation written by me on behalf of Sam’s Club. The opinions and text are all mine.#ad

We’re back in full school mode now! Part of my back to school shopping preparation is stocking my pantry back up with all the essentials!

This year I decided it would be fun to buy some new cereals for breakfast and was excited to see the new Kellogg’s Baby Shark 2-pack cereal at Sam’s Club.

Little girl eating a bowl of Baby Shark cereal while looking at the box of cereal with a smile on her face!

My daughter is Baby Shark obsessed! So, this cereal made a super fun first day of school breakfast! In fact she’s eaten it every morning since I bought it! The 2 pack of cereal is currently available exclusively at all Sam’s Club locations for just $5.98! So, run out and get your family some while it’s on a such a great deal!

Marshmallow Treats

I also thought it would make a super fun and colorful after school snack as a Marshmallow Treat too! This recipe literally takes under 10 mins to throw together!

Start by melting the marshmallows and butter in a large pot on a medium low heat, stirring constantly until smooth!

Marshmallows and butter melting in a large pot on a medium low heat. A large wooden spoon is in the marshmallow mixture.

Once everything is melted completely, add the Baby Shark Berry Cereal and quickly mix it together.

The Baby Shark Cereal being combined in the marshmallow mixture.

While the marshmallow and cereal mixture is still hot, pour the mixture into a greased 9×13 pan and spread evenly.

I like to spray a hand with cooking spray and use that hand to press the mixture down into my pan really good.

A hand pressing the mixture down into a 9x13 pan.

Allow the pan to cool and set for about an hour before cutting the pan into bars!

Baby Shark Cereal Bars cut into squares.

The Kellogg’s Baby Shark 2-pack cereal from Sam’s Club is extra fun as a cereal bar, because not only do they have some super “berry fin-tastic” flavored rings, but it also contains super yummy marshmallows that add tons of flavor!

A pan of Baby Shark Cereal Bars, along with the box of Baby Shark Cereal.

Marshmallow Treat made with Berry Cereals
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3 from 1 vote

Easy Marshmallow Cereal Treats

Easy Marshmallow Cereal Bars made with Baby Shark Berry Cereal, Marshmallow and Butter!
Prep Time10 mins
Resting Time1 hr
Total Time1 hr 10 mins
Course: Dessert
Cuisine: American
Servings: 15 people
Calories: 131kcal
Cost: 5


  • 7 Cups Baby Shark Berry Cereal
  • 10 oz Marshmallows
  • 3 tbsp Butter


  • In a large pot, melt the marshmallows and butter on a medium low heat, stirring constantly until smooth.
  • Once everything is melted completely, add the Baby Shark Berry Cereal and quickly mix it together.
  • While the marshmallow and cereal mixture is still hot, pour the mixture into a greased 9x13 pan and spread evenly.
  • Allow the pan to rest and cool for about an hour before cutting into!


I like to spray my hands with some cooking spray and then use my hands to press the marshmallow mixture down into the pan!


Serving: 1g | Calories: 131kcal | Carbohydrates: 27g | Protein: 1g | Fat: 3g | Saturated Fat: 2g | Cholesterol: 6mg | Sodium: 97mg | Potassium: 16mg | Fiber: 1g | Sugar: 17g | Vitamin A: 304IU | Vitamin C: 7mg | Calcium: 2mg | Iron: 2mg
Tried this recipe?Mention @OverTheBigMoon or tag #OverTheBigMoon!

Don’t forget to run to your local Sam’s Club to grab your your 2-pack of the Baby Shark cereal for just $5.98!!

Baby Shark Cereal box and a bowl full of the cereal in milk!

I hope you enjoy this fun treat!

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If you’ve tried this recipe, I’d love it if you’d comment and rate the recipe! I love to hear feedback and answer questions!

Make sure to pin this post for later too! Thanks so much friends! Have a great day!

These Marshmallow Cereal Bar Treats are too fun! Made with the Baby Shark Cereal! This fun, sweet treat is loved by kids! From overthebigmoon.com!

Pam Dana

Pam is a stay at home working mama that enjoys all phases of life! Between her 3 kids, fur baby (a beyond cute Goldendoodle), wonderful husband, friends and working, she stays pretty busy! But, she is loving every aspect of her life! Here on Over the Big Moon, she loves to share DIY's, recipes, printables, organization tips and more!


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