Fruity Pebbles are the easiest cereal to turn into a treat that actually pops on a party tray. The red, yellow, blue, green, and orange colors are built right into the cereal, so by the time you’re folding it into melted marshmallow, the pan already looks like confetti. No food coloring, sprinkles, or decorating needed. These are what I make for kids’ birthday parties, end-of-school treat days, and any summer table that needs something bright next to a plate of plain cookies.
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If you love a no-bake cereal treat, you’ll also want to try my classic Rice Krispies treats, chocolate chip Rice Krispies treats, Captain Crunch marshmallow treats, and Cinnamon Toast Crunch marshmallow treats. Same butter-and-marshmallow base, four completely different flavor lanes.
Why You’ll Love This Recipe
- 5 ingredients, no oven, 10 minutes of active work. Butter, marshmallows, vanilla, salt, and Fruity Pebbles cereal. One pot from the cabinet to the cooled tray in under 45 minutes. Faster than picking up a bakery tray and a fraction of the cost.
- Cuts cleanly for parties and lunchboxes. Press lightly (don’t compact) and let cool fully before slicing. Holds up in a Tupperware on the drive to a birthday party, fits in a lunchbox without crumbling.
- Make ahead 1 to 2 days. They’re best at days 1 to 3 at room temperature. Make Friday for a Saturday party with no last-minute prep.
Ingredients
- Unsalted butter. Unsalted gives you control over the salt level. Salted butter works in a pinch, just skip the added salt below.
- Mini marshmallows. One 10-ounce bag plus an additional cup. The extra cup boosts the marshmallow-to-cereal ratio so the bars stay soft and sticky instead of dry. Fresh marshmallows melt smoothly and give the best texture. Stale ones from a bag open for weeks will set up firm.
- Pure vanilla extract. Real vanilla, not imitation. Adds depth so the bars don’t taste flat against the sweet, fruity cereal.
- Kosher salt. Diamond Crystal kosher salt is my go-to. A pinch in a sweet treat sounds counterintuitive, but it balances out the sugar so the fruity flavor stands out.
- Fruity Pebbles cereal. Use a fresh, unopened box for the best crunch. The cereal does all the visual and flavor work in this recipe. Same approach I use in my Fruity Pebbles ice cream.
See recipe card below for exact measurements.
Substitutions and Variations
- White chocolate drizzle. Drizzle melted white chocolate or candy melts over the cooled bars for a thicker, more dessert-leaning treat. White chocolate sets clear so the cereal colors still show through.
- Cocoa Pebbles version. Swap the cereal 1:1 for Cocoa Pebbles for a chocolate Pebbles treat. The flavor profile changes completely. Sweeter, less fruity, more like a chocolate cereal milk bar.
- White chocolate chips folded in. Fold ½ cup white chocolate chips in with the cereal at the end (don’t melt them with the marshmallows). The chips soften into pockets without dissolving, same trick as my chocolate chip Rice Krispies treats.
- Salted butter. Salted butter works in a pinch. Just skip the added kosher salt below.
- Aldi or store-brand fruity cereal. Aldi’s Fruity Crunch rings (or any store-brand crispy rice with a colorful coating) work the same way. Slightly less vivid color, identical mechanic, about half the price of name-brand Fruity Pebbles.
This recipe has not been tested with other substitutions or variations. If you replace or add any ingredients, please let us know how it turned out in the comments below!
How to make Fruity Pebbles Marshmallow Treats
1. Grease an 8×8 or 9×9-inch baking pan with butter or line it with parchment paper to prevent the treats from sticking. I take a sheet of parchment, cut the corners, place the paper in the pan, and spray it with oil. And I use these black clips to keep the sides down. These come in handy for other baking projects as well.
2. Start by melting the butter in a large saucepan over low heat. I use my 5.5-quart Dutch oven. Any similar size works great!
3. Once the butter has melted, add the bag of mini marshmallows to the saucepan. Stir constantly until the marshmallows have completely melted and combined with the butter. Remove the saucepan from heat, stir in vanilla and salt.
4. Add the Fruity Pebbles cereal to the marshmallow mixture. Stir well to make sure all the cereal is coated in the marshmallow base.
5. Pour in one cup of marshmallows and fold them gently into the mix. Transfer the mixture to the dish and gently press it down using a spatula or your hands. You may want to spray your hands with cooking spray so they don’t stick!
6. Allow the treats to cool and set for about 1 hour. Once the treats are completely cooled and set, cut them into squares or your desired shape. Store them in an airtight container for up to a week.
FAQs
Storage
Room temperature: Store cut bars in an airtight container at room temperature for 3 to 4 days. They’re softest at days 1 to 3. Cut the bars into squares before storing since they’re easiest to slice while still soft. Stack with parchment or wax paper between layers so they don’t stick.
Refrigerator: Don’t refrigerate. Cold dries the marshmallow base out and makes the bars stiff. If you must refrigerate (warm climate, no AC), let them come to room temperature for 30 minutes before serving.
Freezer: Wrap individual bars in plastic wrap and freeze in a zip-top bag for up to 1 month. Thaw at room temperature for 30 minutes before eating.
If you can’t get enough of these easy treats, you’re going to love my Halloween Rice Krispie Treats and Mini Egg Blondies too!
Thank you!
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See you next time! ♡ Sarah
Recipe
Fruity Pebbles Marshmallow Treats
Ingredients
- 6 tablespoons unsalted butter
- 10 ounces mini marshmallows plus 1 cup
- 1 teaspoon vanilla extract
- 1/2 teaspoon (2g) Diamond Crystal kosher salt; for table salt, use about half as much by volume or the same weight
- 6 cups Fruity Pebbles cereal
Instructions
- Line a 8×8 or 9×9 with parchment paper. Lightly grease the parchment. I always use a very light mist of nonstick spray. Set aside.
- Melt the butter over low heat in a large pot or Dutch oven. Once melted, add the 10-ounce bag of marshmallows. Stir the mixture until the marshmallows are just melted. Stir in the salt and vanilla to combine.6 tablespoons unsalted butter, 10 ounces mini marshmallows, 1 teaspoon vanilla extract, 1/2 teaspoon (2g) Diamond Crystal kosher salt; for table salt, use about half as much by volume or the same weight
- Remove the pan from the heat, add the Fruity Pebbles cereal, and mix until evenly coated with the marshmallow mixture. Stir in the additional one cup of marshmallows.6 cups Fruity Pebbles cereal
- Turn the mixture out into the prepared pan and, using a wooden spoon or spatula that has been coated in non-stick cooking spray, press the mixture into a packed, even layer. Do not pack it down with force. Lightly press down until it is secure in the pan.
- Allow treats to set for at least 1 hour at room temperature and up to 1 day. Cover tightly if leaving out for more than a few hours.
- Lift the treats as a whole out of the pan using the edges of the parchment paper. Cut into squares.
- Cover and store leftover treats at room temperature for up to 3 days. To store, place in an airtight container, with sheets of parchment or wax paper between layers.
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