Unicorn Cereal Bars Recipe
Introduction to Recipe
These Unicorn Cereal Bars are the perfect treat for any celebration or simply when you’re in the mood for something colorful and fun. A delightful mix of Cheerios, Rice Krispies, and gooey marshmallows comes together to create a deliciously crunchy bar, which is topped with vibrant, eye-catching buttercream icing. With colorful sprinkles to finish, these bars are as pleasing to the eyes as they are to the taste buds.
Great for kids’ parties, special occasions, or a fun baking project, these Unicorn Cereal Bars are sure to make everyone smile. If you love fun and easy dessert recipes, check out our Rainbow Rice Krispies Treats or Funfetti Cupcakes.
Basic Recipe: Ingredients and Instructions
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Unicorn Cereal Bars – Fun, Colorful, and Delicious Treats for Any Occasion
- Total Time: 1 hour (including cooling time)
- Yield: 12-16 bars 1x
- Diet: Vegetarian
Description
These Unicorn Cereal Bars are a fun, colorful, and delicious treat that’s perfect for any celebration or as a sweet snack. Made with a combination of Cheerios, Rice Krispies, and mini marshmallows, then topped with vibrant buttercream icing in pink, purple, and teal, these bars are both crunchy and sweet. Sprinkles add the final magical touch!
Ingredients
For the Bars:
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2 cups Cheerios
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2 cups Rice Krispies
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1 bag mini marshmallows (about 10 oz)
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5 tablespoons butter
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1 teaspoon vanilla extract
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Sprinkles (for garnish)
For the Buttercream Icing:
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3 cups powdered sugar
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1 stick butter (softened)
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1 teaspoon milk
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Gel food coloring: Pink, purple, and teal (or any colors of your choice)
Instructions
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Make the Cereal Bars:
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In a large pot, melt the butter over low heat. Once melted, add the mini marshmallows and stir until completely melted and smooth.
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Remove from heat and stir in the vanilla extract.
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Add the Cheerios and Rice Krispies to the melted marshmallow mixture. Stir gently to coat the cereal evenly with the marshmallow mixture.
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Press the mixture into a greased 9×13-inch baking pan. Use a spatula or your hands (lightly greased) to press it down into an even layer.
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Let the bars cool completely in the pan for about 30 minutes.
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Prepare the Buttercream Icing:
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In a medium-sized bowl, beat together the softened butter and powdered sugar until smooth and fluffy. Add the milk and mix until well combined.
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Divide the buttercream icing into three bowls.
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Add a few drops of gel food coloring to each bowl to create the pink, purple, and teal icing. Stir until the colors are well incorporated.
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Decorate the Bars:
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Once the cereal bars are fully cooled and set, spread a layer of each colored buttercream over the top of the bars. You can create a swirl effect or alternate the colors to make it more festive.
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Finish by sprinkling colorful sprinkles over the top of the bars.
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Serve: Cut the bars into squares or rectangles and serve. Enjoy the crunchy, sweet, and colorful goodness!
Notes
Storage: Store the cereal bars in an airtight container at room temperature for up to 3 days.
Customization: Feel free to add other fun toppings like edible glitter, mini chocolate chips, or rainbow candies to make them even more magical.
Buttercream alternatives: If you want a quicker version, you can skip the buttercream and use store-bought frosting, or just top with extra sprinkles.
- Prep Time: 15 minutes
- Cook Time: 5 minutes
- Category: Dessert/Snack
- Method: No-bake, Mixing, Decorating
- Cuisine: American
Nutrition
- Serving Size: 1 bar
- Calories: 180
- Sugar: 16g
- Sodium: 45mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 26g
- Fiber: 1g
- Protein: 1g
- Cholesterol: 20mg
Keywords: Unicorn Cereal Bars
Instructions:
- Prepare the Cereal Mixture: In a large mixing bowl, combine the Cheerios and Rice Krispies cereal. Set aside.
- Melt the Marshmallows: In a large saucepan over medium heat, melt the butter. Once the butter is melted, add the mini marshmallows and stir until they are completely melted and smooth. Remove from heat and stir in the vanilla extract.
- Combine the Cereal and Marshmallow Mixture: Pour the melted marshmallow mixture over the cereals in the mixing bowl. Stir gently to coat all the cereal pieces with the marshmallow mixture.
- Press the Mixture into a Pan: Lightly grease a 9×13-inch baking dish or line it with parchment paper. Pour the cereal mixture into the dish and press it down gently with a spatula or your hands until the mixture is evenly spread and compact.
- Prepare the Buttercream Icing: In a medium mixing bowl, beat together the powdered sugar, butter, and milk until smooth and fluffy. If the icing is too thick, add a tiny bit more milk, a drop at a time, until you achieve a smooth, spreadable consistency.
- Color the Buttercream: Divide the buttercream into three separate bowls. Using the gel food coloring, add pink, purple, and teal coloring to each bowl to create the three colors of buttercream.
- Decorate the Bars: Once the cereal bars have cooled and set, spread the colored buttercream over the top of the bars. You can either swirl the colors together for a marble effect or spread them in sections for a fun rainbow effect. Finish by sprinkling colorful sprinkles on top for extra fun!
- Serve and Enjoy: Allow the icing to set for a few minutes before cutting the bars into squares. Serve and enjoy the fun, colorful treat!
Advanced Techniques
While these Unicorn Cereal Bars are easy to make, here are a few advanced techniques to elevate them:
1. Make the Bars Extra Festive:
To make these bars even more special, consider adding edible glitter or candy pieces such as mini chocolate chips, crushed candy, or rainbow sprinkles directly into the cereal mixture before pressing it into the pan. This will give the bars an extra fun pop of color and texture.
2. Use a Piping Bag for the Icing:
If you want to take the icing design to the next level, you can pipe the buttercream onto the bars instead of spreading it with a spatula. Using a piping bag with different tips will give you more control and allow you to create more intricate designs, such as rosettes or fun swirls.
3. Add a Fun Flavor Twist:
While vanilla is delicious, you can experiment with different flavors of extract in the marshmallow mixture. Try almond extract, caramel extract, or even a touch of coconut extract for a unique flavor profile that complements the sweetness of the bars.
4. Create Unicorn-Themed Decorations:
If you’re looking for a way to make the bars more themed, you can add cute unicorn decorations on top. Use candy eyes, a horn made from candy or fondant, or edible glitter shaped like stars to really bring your unicorn theme to life!
See more advanced recipes, at Mobolux.

Storage, Shelf Life, and Maintenance Tips
How to Store the Cereal Bars:
These Unicorn Cereal Bars can be stored in an airtight container at room temperature for up to 4-5 days. Make sure the container is sealed well to keep the bars fresh and prevent them from becoming stale.
Can I Refrigerate Them?:
While these bars can be stored in the fridge, refrigeration is not necessary and might cause the bars to become too firm. If you do choose to refrigerate them, let them come to room temperature before serving to maintain the ideal texture.
How to Prevent the Bars from Getting Soggy:
To prevent the bars from getting soggy, make sure the marshmallow mixture is fully melted and the bars are pressed firmly but not too tightly into the pan. Also, allow the bars to cool completely before icing to prevent the buttercream from melting.

Dietary Adaptations and Substitutions
This Unicorn Cereal Bars recipe can be easily adapted to suit various dietary preferences or restrictions:
1. Gluten-Free:
For a gluten-free version, use gluten-free cereals like Rice Chex or gluten-free puffed rice cereal in place of Rice Krispies. Ensure that the other ingredients you use, like the butter and marshmallows, are also gluten-free.
2. Dairy-Free:
To make these bars dairy-free, swap out the butter for dairy-free margarine or coconut oil. You can also use a dairy-free butter substitute for the buttercream icing and substitute the milk for a non-dairy option like almond or coconut milk.
3. Vegan:
For a vegan version, use vegan butter and a plant-based yogurt in place of dairy. You can also replace the mini marshmallows with a vegan marshmallow alternative that is made without gelatin.
4. Sugar-Free:
If you’re looking to reduce sugar, consider using sugar-free marshmallows and powdered sugar alternatives in the icing. You can also adjust the amount of honey or sweetener used in the recipe to your taste.

FAQs About The Recipe
Can I use a different type of cereal?
Yes! You can substitute Rice Krispies and Cheerios with other cereals of your choice, such as cornflakes, puffed rice, or even fruity cereals for a different flavor and color combination.
Can I prepare the cereal bars ahead of time?
Absolutely! You can make the Unicorn Cereal Bars a day ahead of time. Store them in an airtight container at room temperature, and they will stay fresh for a few days.
How do I get the buttercream to have the perfect consistency?
If your buttercream is too thick, add a little more milk, one teaspoon at a time. If it’s too thin, add more powdered sugar until you reach a smooth and spreadable consistency.
Can I use a different type of icing?
Yes, you can use any icing you prefer. A cream cheese frosting, chocolate ganache, or even whipped cream could be used as a substitute for the buttercream. Just keep in mind that different icing types may change the texture and sweetness of the bars.

Conclusion & Final Thoughts
These Unicorn Cereal Bars are the perfect fun and colorful treat for kids and adults alike. Easy to make, customizable with different cereals, and topped with vibrant buttercream, these bars are a delightful addition to any party or snack time. They’re not only visually stunning, but they’re also incredibly tasty, with the perfect balance of crispy cereal, gooey marshmallows, and sweet frosting.
With a few simple ingredients and a little creativity, you can make these bars your own, whether by adding different colors, flavors, or toppings. Give them a try and enjoy this fun, whimsical treat!