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    Home » Recipes » Snacks + Treats » Froot Loop Cereal Marshmallow Bars

    Froot Loop Cereal Marshmallow Bars

    Published : August 26, 2022 Updated : August 26, 2022 by Together As Family Leave a Comment

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    Froot Loop Cereal Bars are an easy treat recipe that only needs 3 ingredients! Froot Loops cereal, mini marshmallows, and butter is all you need for these colorful, fruity, and sweet treats. 

    A stack of two cereal bars with Froot Loops cereal on top of each other, some marshmallows and cereal to the side of the stack.

    Froot Loop Cereal Bars Recipe

    I am not sure that there is a single kid who doesn't like the iconic rainbow colored Froot Loops cereal. I begged for this cereal as a little girl, and my own kids do the same thing. These Froot Loop Cereal Bars are always a favorite recipe at my house. 

    Gooey, sweet & sticky, and you only need 3 ingredients to make them. This is a great recipe to teach the older kids to make or have them help you make it.

    A white dish of cereal treats with Froot Loops cereal.

    Ingredients You Need

    Only 3 Ingredients for these cereal bars. I also share some tips so that you can recreate this recipe for your own family with great results.

    • Froot Loops Cereal - The name brand, or store generic brand, will both work just fine. Make sure you measure the cereal out before starting, that way once the marshmallows are melted you can immediately mix them into the cereal. 
    • Mini Marshmallows - You will need 12 ounces of mini marshmallows to make these, which is equal to 7 cups total. Make sure you buy the larger bag (16 oz) of mini marshmallows so you have enough. 
    • Butter - I use salted butter when I make marshmallow treat recipes like this one. 

    Ingredients for this treat bar recipe with each one labeled in text with what it is.

    How To Make Treat Bars with Froot Loops & Marshmallows

    Learn how to make these colorful cereal bars with the easy steps below. Be sure and read to the bottom of the post where there is a printable recipe card, a pin it button so you can save it to Pinterest, and a recipe card with the detailed ingredients and instructions. 

    • Prep : Measure out the Froot Loops cereal into a large mixing bowl. Prepare an 8x8-inch square baking dish by spraying with cooking spray, lining with parchment paper, tin foil, or wax paper. If you line the pan with something then it's much easier to pull the cereal treat bars out of the pan so you can cut them evenly. Make sure you leave some overhang of whatever you are using so you can pull the bars out. 
    • Marshmallow + Butter : In a large pot, over low heat, melt the butter. Once melted, add in the mini marshmallows and stir until they're melted and the mixture is smooth. 
    • Cereal Bars : Once melted and smooth, immediately dump the Froot Loops cereal into the pot and stir until all the cereal is coated in the gooey marshmallow mix and it's combined well. Spread it into the prepared pan and gently press it down into the pan. Let the bars rest at room temperature for 1-2 hours or until they're firm and set. 

    How to make cereal treat bars with Froot Loops cereal in this step by step collage with pictures for the directions.

    How to make cereal treat bars with Froot Loops cereal in this step by step collage with pictures for the directions.

    Tips For Success

    Here are a few of my helpful tips so that you can have success making this recipe in your own kitchen. 

    • Low Heat : It's important to leave the stove burner on low heat when melting the butter and marshmallows. If needed, you can turn it up to medium-low heat. We don't want the marshmallows to burn at all. Low & slow is the way to go!
    • Completely Melted Marshmallows : Make sure that you do not take the pan off the stove until the marshmallows are completely smooth and melted. 
    • Gently Press : Don't compact/press down the cereal bars aggressively into the pan. Gently press, with light pressure, to get them into the pan. You don't wan to compact the bars or else you can end up with dry cereal bar treats. 
    • Easy To Cut : To make these easy to cut, line the pan with parchment paper, wax paper, or tin foil and leave some overhang on two of the sides. Pull up the bars, with the overhang, and then place it on the counter top and cut into even squares. 

    Overhead picture of cereal bars against a darker colored background.

    Froot Loop Cereal Bars FAQ's

    • How To Store Leftovers
      • Store any remaining leftovers, in an air-tight container, at room temperature for 2-3 days. 
      • I prefer eating Krispie treat bars and cereal bars within 24 hours of making them because they're softer. The longer leftovers are kept, the firmer and harder the treat bar will become. 
    • Can I Make These Ahead of Time?
      • Yes you can. These Froot Loop cereal bars need to set and firm up for 1-2 hours before cutting them, for best results. I would not suggest making these too far in advance of when you need them. At most, you could make them several hours in advance, and make sure that you cover the pan tightly so they don't dry out. 
    • Variation & Substitution Ideas
      • More Marshmallows : You have to buy the larger size bag of mini marshmallows anyways for this recipe, so if wanted, add 1 cup of mini marshmallows in with the Froot Loops cereal for even more marshmallow flavor and gooey soft texture. 
      • Cereal : You really could substitute with any cereal you want in this recipe. Cocoa Puffs or Corn Puffs are good options to switch it up. 
      • Double The Recipe : Double ever ingredient for even more servings! Use a 9x13 baking dish instead of the smaller 8x8 if doubling the recipe. 

    Close photo of cereal bars with cereal pieces and marshmallows at the side of it.

    A white pot with gooey marshmallow cereal treat mixture inside of it and a white spoon.

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    A white dish of cereal treats with Froot Loops cereal.

    Froot Loop Cereal Bars

    Jessica - Together as Family
    Froot Loop Cereal Bars are an easy treat recipe that only needs 3 ingredients! Froot Loops cereal, mini marshmallows, and butter is all you need for these colorful, fruity, and sweet treats. 
    No ratings yet
    Print Recipe Pin Recipe
    Prep Time 5 mins
    Cook Time 5 mins
    Cooling Time 2 hrs
    Total Time 2 hrs 10 mins
    Course Dessert, Snack
    Cuisine American
    Servings 12
    Calories 172 kcal

    Ingredients
      

    • 6 cups Froot Loops Cereal
    • 3 tablespoons butter
    • 7 cups mini marshmallows

    Instructions
     

    • Prepare an 8x8-inch baking dish and spray it with cooking spray, or you can line it with parchment paper or tin foil.
    • Measure out 6 cups of Froot Loops cereal and set it aside for later.
    • In a large pot, over low to medium-low heat, melt the butter. Once melted, add the mini marshmallows and stir until melted & completely smooth.
    • Remove the pan from the heat and pour the Froot Loops cereal into it. Stir it together until all the cereal is coated in the marshmallow mix and it's mixed together well.
    • Pour the Froot Loop mixture into the prepared pan and gently press it into the pan. Let the cereal bars sit at room temperature for about 1-2 hours or until set.
      * You can place the bars in the fridge to speed this up, but let them come to room temperature before eating them.
    • Store any leftovers in an air-tight container, at room temperature, for up to 3 days.
      * I think these are best eaten within 24 hours of making them.

    Notes

    Mini Marshmallows : 7 cups of mini marshmallows is equal to 12 oz. You will need to buy the larger bag (16 oz) of mini marshmallows to have enough for this recipe. You can use the extra marshmallows, like 1 cup, and add them in with the cereal. This way, you have whole chunks of soft marshmallow through out the bar. This is optional. 
    Butter : I normally use salted butter for all my baking, but unsalted butter will work really well in this recipe too. Use whichever you have. 

    Nutrition

    Calories: 172kcalCarbohydrates: 36gProtein: 1gFat: 3gSaturated Fat: 2gPolyunsaturated Fat: 0.3gMonounsaturated Fat: 1gTrans Fat: 0.1gCholesterol: 8mgSodium: 114mgPotassium: 19mgFiber: 1gSugar: 22gVitamin A: 337IUVitamin C: 8mgCalcium: 3mgIron: 2mg
    Keyword froot loop cereal bars
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    I am so glad that you are here. I love sharing recipes and I am very passionate about families sitting together at the table for dinner. Even if it's takeout or a homecooked meal, eat together! I hope I can help you find some delicious recipes that your family will love just as much as mine does.

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