Funfetti Marshmallow Cereal Treats

Easy Funfetti Marshmallow Cereal Bars: The Ultimate Chewy & Colorful Treat Recipe

Get ready to whip up a batch of pure joy with these incredible Funfetti Marshmallow Cereal Bars! Combining the satisfying crunch of crispy cereal with gooey, melted marshmallows and a vibrant explosion of rainbow sprinkles, these bars are more than just a dessert – they’re a celebration in every bite. Deliciously thick, wonderfully soft, and delightfully chewy, with a subtle hint of vanilla, they are the perfect colorful treat for any occasion. Forget complicated baking; these no-bake wonders are incredibly easy to make and guaranteed to bring smiles, much like these Frosted Sugar Cookie Bars.

Stack of deliciously thick Funfetti Marshmallow Cereal Bars with vibrant rainbow sprinkles, ready to be enjoyed.

Why These Funfetti Marshmallow Cereal Bars Are a Must-Try

During a recent holiday gathering, I rediscovered the simple magic of classic rice crispy treats. I had honestly forgotten just how incredibly tasty and unbelievably easy they are to prepare! The best part? Everyone, young and old, absolutely adores them. The entire tray vanished before the night was over, a true testament to their universal appeal. The holiday edition cereal with its festive red and green hues made those bars particularly special, sparking an idea that led to this delightful funfetti creation.

This recipe takes that beloved classic and elevates it to a new level of fun and versatility. Imagine being able to customize your cereal bars for literally any occasion! That’s exactly what these funfetti marshmallow cereal bars allow you to do. By incorporating vibrant rainbow sprinkles (also affectionately known as jimmies), you can effortlessly adapt the colors to match any theme or holiday. Think soft pastels for an Easter brunch, bold red, white, and blue for a Fourth of July barbecue, or spooky orange and black for Halloween. I’m a firm believer that food should not only taste amazing but also look the part. After all, we often eat with our eyes first! This passion for colorful, occasion-matching food extends to savory dishes too, like a festive green Spinach Bread for St. Patrick’s Day or simply visually appealing options like gorgeous Blueberry Cottage Cheese Smoothies.

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Close-up of a single Funfetti Marshmallow Cereal Bar, showcasing its soft, chewy texture and colorful sprinkles on a white background.

Choosing the Right Cereal (and why Chex is superior!)

While I absolutely adore classic rice krispie treats, there’s a secret ingredient that elevates my marshmallow cereal bars to perfection: corn Chex cereal. Unlike puffed rice, Chex cereal offers a uniquely satisfying, robust crunch that stands up beautifully to the gooey marshmallow mixture. More importantly, the distinctive waffle-like pockets of the Chex pieces are absolute magnets for marshmallow, ensuring every single bite is packed with that deliciously chewy, sweet goodness. You can certainly experiment with other varieties like rice, wheat, or vanilla Chex, but the specific, slightly sweet flavor and incredible texture of corn Chex truly make these funfetti marshmallow cereal bars shine. This choice isn’t just about taste; it’s about creating a superior texture that is both crispy and incredibly chewy.

Secrets to Perfectly Soft & Chewy Funfetti Marshmallow Cereal Bars

One of the most common questions I get about my homemade marshmallow bars is how I manage to make them so incredibly soft and chewy, even the next day. Achieving that perfect, melt-in-your-mouth texture isn’t difficult, but it does require a few key techniques. Follow these tips to ensure your funfetti marshmallow cereal bars are always wonderfully tender and never tough:

  • Butter is Your Best Friend: Don’t skimp on the butter! A generous amount of butter is crucial for creating a rich, pliable marshmallow base that keeps the bars soft. It adds flavor and prevents the mixture from becoming too stiff.
  • Fresh Marshmallows Only: This is non-negotiable. Always use super fresh marshmallows straight from a newly opened bag. Old marshmallows, even if they look fine, can be drier and won’t melt as smoothly or yield the same soft, gooey texture. Freshness truly makes all the difference in the final chewiness of your funfetti marshmallow cereal bars.
  • Gentle Melting is Key: When melting your butter and marshmallows, use low heat and constant stirring. The goal is to get the marshmallows just melted, not caramelized or overcooked. Overcooking marshmallows causes them to harden as they cool, resulting in brittle bars. I always remove them from the heat when there are still a few small lumps remaining. The residual heat will finish the melting process as you stir in the vanilla.
  • Don’t Overmix the Cereal: Once the cereal is added, mix just enough to coat all the pieces evenly. Excessive stirring can crush the cereal, leading to a denser, less crispy bar.
  • Press, Don’t Pack: This might be the most important tip! When pressing the cereal mixture into your prepared pan, use a firm but gentle touch. You want to create an even layer, but you absolutely do not want to compress or pack the bars down tightly. Packing them too densely will result in tough, hard bars instead of the desired soft and chewy texture. A piece of buttered wax paper or parchment paper can make this step much easier and prevent sticking.

By following these simple guidelines, you’ll consistently create funfetti marshmallow cereal bars that remain deliciously soft and chewy, even if they miraculously last until the next day!

A stack of three soft and chewy Funfetti Marshmallow Cereal Bars, showcasing their thickness and colorful sprinkles.

Ingredients for Your Colorful Cereal Bars

Gathering your simple ingredients is the first step to creating these delightful funfetti marshmallow cereal bars. You’ll be amazed at how few items you need for such a spectacular treat!

  • 4 tablespoons butter
  • 1/2 teaspoon vanilla extract
  • 10 oz bag of fresh marshmallows (mini marshmallows melt faster and more evenly)
  • 7 cups corn Chex cereal* (see note below for variations)
  • 1/2 cup funfetti sprinkles (or sprinkles of your preferred color!)

Helpful Kitchen Tools for Easy Preparation

Having the right tools makes the process even smoother. Here are a few items you might find helpful in your kitchen:

  • Large spoon or spatula (for stirring)
  • Large pot (to melt marshmallows)
  • 13×9-inch or 9×9-inch pan (for setting the bars)
  • Measuring cups and spoons
  • Parchment paper or wax paper (for pressing the mixture)

Two freshly cut Funfetti Marshmallow Cereal Bars on a small white plate, ready for a sweet indulgence.

Perfecting the Thickness: Pan Size Matters

While many cereal treats are traditionally made in a 13×9-inch pan, I have a personal preference for using a smaller square pan, typically a 9×9-inch. This seemingly small change makes a significant difference in the final product. Using a 9×9-inch pan results in much thicker bars, which I find to be infinitely more satisfying. You might get slightly fewer servings, but each piece will be wonderfully substantial, providing that perfectly thick and irresistibly chewy texture that makes these funfetti marshmallow cereal bars truly stand out. If you prefer thinner bars, the 13×9-inch pan works just fine, but for maximum gooey thickness, opt for the square!

marshmallow cereal treat bars

Funfetti Marshmallow Cereal Bars

These funfetti marshmallow cereal bars are made with crispy cereal, marshmallows and rainbow sprinkles. Deliciously thick, soft and chewy with a hint of vanilla, they’re a fun treat for any occasion!

5 from 14 votes

IMPORTANT – There are often Frequently Asked Questions within the blog post that you may find helpful. Simply scroll back up to read them!

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Course: Desserts
Cuisine: American
Servings: 12 bars
15 minutes
Calories: 204
Author: Amanda Davis

Ingredients

  • 4 tablespoons butter
  • ½ teaspoon vanilla
  • 10 oz bag of marshmallows
  • 7 cups corn Chex cereal*
  • ½ cup funfetti sprinkles

Before You Begin

*You may use another variety of Chex cereal, or 6 cups of crispy rice cereal.

Instructions

  • Lightly grease a 9×9 or 13×9 pan; set aside. This prevents sticking and ensures easy removal of your funfetti marshmallow cereal bars.
  • In a large pot over low heat, melt the butter. Stir in the vanilla and marshmallows. Continue stirring constantly until marshmallows are just melted. Remember not to over-cook them; remove from heat while small lumps remain.
  • Remove the marshmallow mixture from heat and add the cereal. Stir gently until the cereal is almost completely coated. Then, carefully fold in the funfetti sprinkles, mixing just enough to distribute their vibrant colors without crushing them. Pour the mixture immediately into your prepared pan. Using buttered wax paper or parchment paper, gently press the cereal mixture into an even layer. Allow the bars to cool completely at room temperature before cutting them into squares or rectangles.

Nutrition

Serving: 1bar |
Calories: 204cal |
Carbohydrates: 40g |
Protein: 1g |
Fat: 4g |
Saturated Fat: 2g |
Cholesterol: 10mg |
Sodium: 189mg |
Potassium: 35mg |
Fiber: 1g |
Sugar: 21g |
Vitamin A: 700IU |
Vitamin C: 5.3mg |
Calcium: 60mg |
Iron: 5.3mg
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The recipes on this blog are tested with a conventional gas oven and gas stovetop. It’s important to note that some ovens, especially as they age, can cook and bake inconsistently. Using an inexpensive oven thermometer can assure you that your oven is truly heating to the proper temperature. If you use a toaster oven or countertop oven, please keep in mind that they may not distribute heat the same as a conventional full sized oven and you may need to adjust your cooking/baking times. In the case of recipes made with a pressure cooker, air fryer, slow cooker, or other appliance, a link to the appliances we use is listed within each respective recipe. For baking recipes where measurements are given by weight, please note that results may not be the same if cups are used instead, and we can’t guarantee success with that method.

Customizing Your Funfetti Marshmallow Cereal Bars

One of the most enjoyable aspects of making these funfetti marshmallow cereal bars is their incredible adaptability! While rainbow sprinkles are always a hit, don’t hesitate to get creative with your customizations. This makes them perfect for any holiday, season, or personal preference:

  • Seasonal Sprinkles: As mentioned, change out the rainbow sprinkles for specific holiday colors. Red and green for Christmas, pastels for Easter, red/white/blue for patriotic holidays, or black/orange for Halloween. You can even find sprinkles shaped like hearts for Valentine’s Day or shamrocks for St. Patrick’s Day.
  • Different Cereal Types: While I highly recommend corn Chex for its unique texture, you can certainly experiment! Rice Chex, wheat Chex, or even a mix of cereals can offer a different flavor profile and texture. If using traditional crispy rice cereal, you might want to slightly reduce the amount to 6 cups to maintain the ideal marshmallow-to-cereal ratio.
  • Extract Variations: Instead of vanilla, try almond extract for a subtle nutty note, or a touch of peppermint extract for a festive twist during the winter months. Maple extract could also be delicious!
  • Add-Ins: Once the cereal is almost coated but before pressing into the pan, you can gently fold in other ingredients like mini chocolate chips, chopped nuts (if no allergies), or even dried fruit for extra flavor and texture. Just be careful not to overmix.
  • Chocolate Drizzle: For an extra decadent touch, once the bars have cooled, melt some chocolate chips (milk, dark, or white) and drizzle it artistically over the top. Allow the chocolate to set before serving.

Serving and Storage Tips

These funfetti marshmallow cereal bars are best enjoyed at room temperature, making them perfectly portable for parties, potlucks, or lunchboxes. Once cooled and cut, store them in an airtight container at room temperature for up to 3-4 days. To maintain their freshness and prevent them from sticking together, you can place a piece of parchment paper between layers if stacking them. Avoid refrigerating these bars, as the cold can make them harder and less chewy, detracting from their signature soft texture. For longer storage, they can be frozen for up to 6 weeks. Wrap individual bars tightly in plastic wrap, then place them in a freezer-safe bag or container.

Frequently Asked Questions About Funfetti Marshmallow Cereal Bars

Here are some common questions and quick answers to help you master this delicious recipe:

  • Can I use old marshmallows? It’s highly recommended to use fresh marshmallows for the best soft and chewy texture. Old marshmallows tend to be drier and won’t melt as smoothly, leading to tougher bars.
  • My bars are too hard, what went wrong? This usually happens if the marshmallows were overcooked or if the mixture was pressed too firmly into the pan. Remember to remove marshmallows from heat when they’re just melted, and press gently.
  • Can I make these gluten-free? Yes! Corn Chex cereal is naturally gluten-free, so these bars are already a great option. Just double-check your marshmallow and sprinkle labels to ensure they are also certified gluten-free.
  • How far in advance can I make these? These bars are best enjoyed within 1-2 days of making them for optimal freshness and chewiness. However, they will stay good in an airtight container at room temperature for up to 3-4 days.
  • Can I use butter substitutes? While butter provides the best flavor and texture, you can experiment with dairy-free margarine or coconut oil as a substitute. The texture might vary slightly.

Conclusion: A Simple Recipe for Endless Joy

We hope you thoroughly enjoy creating and devouring these delightful Funfetti Marshmallow Cereal Bars! Their vibrant colors and irresistible texture make them a fantastic addition to any dessert table, a perfect after-school snack, or a joyful treat for any special occasion. Don’t they look incredibly inviting? If you love chewy and delicious bar recipes as much as we do, be sure to explore more of our favorites, like these Chewy Cookie Crunch Bars or these comforting Banana Bars with Vanilla Cream Cheese Frosting! Happy snacking!

pinterest image with text: Funfetti Marshmallow Cereal Bars, soft and chewy with rainbow sprinkles