Fruity Pebbles Marshmallow Treats

An icon representing a clock 20 min | easy
Review

Introduction

Meet the loud, candy-bright cousin of Rice Krispies treats: Fruity Pebbles marshmallow squares that are chewy, gooey, and buttery, with vanilla and a pinch of sea salt to keep the sweetness in line.

No-bake and done in minutes, they are perfect for birthday parties, bake sales, rainbow dessert platters, or a late-night sweet tooth when you want max payoff with minimal mess.

Ingredients  (16 servings)

Get Ingredients →

Order the ingredients from your local store for pickup or delivery. You’ll check out through Instacart.

Ingredients:

  • 8 cups Fruity Pebbles breakfast cereal
  • 1 bag (10 oz) mini marshmallows
  • 5 Tbsp unsalted butter
  • ½ tsp pure vanilla extract
  • ½ tsp fine sea salt
  • cooking oil spray (or butter)
Fruity Pebbles Marshmallow Treats

How to Make Fruity Pebbles Marshmallow Treats

  1. Prep the pan

    Line a 9x13-inch pan with parchment, leaving overhang for easy lifting, and lightly coat the parchment and sides with cooking spray or a thin film of butter.

  2. Stage your ingredients

    Add the 8 cups of Fruity Pebbles to a large mixing bowl and set near the stove, and lightly grease a silicone spatula and your measuring cup so nothing sticks.

  3. Melt the butter low and slow

    In a wide pot over low heat, melt the 5 tablespoons unsalted butter until just melted and glossy, keeping the heat gentle for soft, chewy treats.

  4. Optional brown-butter move

    If you want nutty depth, continue cooking the butter on medium-low until it smells toasty and the milk solids are amber, then immediately drop the heat back to low to avoid darkening the marshmallows.

  5. Melt the marshmallows carefully

    Add the mini marshmallows to the pot and stir constantly on low until about 75 percent melted, then remove from the heat and keep stirring off-heat until fully smooth.

  6. Season the mix

    Stir in the vanilla extract and fine sea salt until evenly combined so the sweetness is balanced and vibrant.

  7. Coat the cereal

    Pour the marshmallow mixture over the Fruity Pebbles and fold quickly but gently with the greased spatula until every piece looks glossy without crushing the cereal.

  8. Press without packing

    Transfer to the prepared pan and press into an even layer with lightly greased hands or a parchment sheet, using just enough pressure to level without compacting so the bars stay tender.

  9. Set and slice

    Let the pan sit at room temperature until set, about 30 to 45 minutes, then lift out by the parchment and cut into 16 squares with a lightly oiled sharp knife.

  10. Store right

    Keep bars in an airtight glass container at room temperature for up to 2 days, layering with parchment to prevent sticking.

Fruity Pebbles Marshmallow Treats

Substitutions

Unsalted butter -> Browned butter
Brown the butter until nutty and amber for deeper, toasty flavor and a more complex aroma; the bars will skew slightly warmer in color and taste more grown-up without losing chew.
Unsalted butter -> Refined coconut oil (dairy-free)
Use the same amount of refined coconut oil for a clean, dairy-free set; the bars hold a touch firmer and the fruity flavors stay bright because refined oil is neutral.
Mini marshmallows -> Vegan marshmallows
Swap equal weight of vegan marshmallows and melt on low a bit longer; they set slightly denser, so stir patiently and consider adding 1 teaspoon neutral oil for silkier flow.
Fruity Pebbles Marshmallow Treats

Tips

Heat control is everything
Keep the pot on low and finish melting off-heat to avoid tough, dry bars; high heat cooks the sugar and makes the mix rubbery.
Salt makes the fruit pop
Fine sea salt dissolves cleanly and sharpens the fruity cereal while cutting sweetness, so do not skip it.
Do not overpack the pan
Press just until level; compacting squeezes out air and makes the treats dense instead of tender-chewy.
Pan choice changes thickness
Use a 9x13-inch pan for classic snackable bars or a 9x9-inch pan for bakery-thick squares that eat like dessert.
Cut clean with a real knife
Use a sharp, lightly oiled chef’s knife and wipe between cuts for crisp edges that show off the colors.
Store smart
Layer squares between parchment in a glass container at room temp; refrigeration makes them hard and dulls the flavor.

Nutrition Facts *

Energy 124 kcal
Protein 1 g
Total Fat 3 g
Carbohydrates 23 g
Dietary Fiber 0 g

* Approximate, per serving.
Data source: USDA FoodData Central.

FAQ

Why did my treats turn hard or dry?
The marshmallows likely overheated or the mixture was packed too firmly; keep the heat low, finish melting off-heat, and press gently so air stays in the bars.
Can I use regular large marshmallows instead of mini?
Yes, match the weight to 10 ounces and chop them for faster melting; melt low and slow and stir constantly for a smooth texture.
How do I keep the colors bright and not muddy?
Avoid high heat, stir just until coated, and skip darkly browning the butter if you want the hues to stay vivid.
Can I add mix-ins like white chocolate or sprinkles?
Fold them in after the cereal is coated but while the mixture is warm, not hot, so chips do not melt and sprinkles keep their shape.
Can I make these in the microwave?
Melt butter and marshmallows together in a large microwave-safe glass bowl in 30-second bursts, stirring between each until smooth, then proceed as written.
How long do they keep and can I ship them?
They are best within 48 hours at room temp; for gifting, wrap individual squares tightly in parchment and place in a snug tin to minimize air and motion.

Serving Suggestions

Color-forward squares like these love a light drizzle of melted white chocolate and a whisper of flaky salt, or try a scatter of crushed freeze-dried strawberries for tart contrast.

If you somehow have leftovers, pulse them into crumbs and press into a buttered pan for a fast cheesecake crust that tastes like a carnival.

More pairings:

Reviews

We haven’t received any feedback on this recipe yet.

Made this recipe? How did it go?

Please leave your feedback below. We’d love to hear from you!

You Might Also Like

Rice Krispie Mummies

Rice Krispie Mummies

Sweet, stretchy marshmallow treats draped in silky white chocolate bandages with googly eyes that stare back and dare you to take a bite.

View recipe →

Chocolate Brownies

Chocolate Brownies

Deeply chocolatey, fudgy brownies with a crinkly shiny top and melty semisweet pockets that make you close your eyes on the first bite.

View recipe →

Gluten-Free Red Velvet White Chocolate Chip Cookies

Gluten-Free Red Velvet White Chocolate Chip Cookies

Buttery, ruby-red cookies studded with creamy white chocolate chips that bake up soft in the center, gently crisp at the edges, and unapologetically luscious.

View recipe →

Cherry Pie Crumb Bars

Cherry Pie Crumb Bars

Buttery, golden crumb bars loaded with jammy, lemon-bright cherries and a sandy, cookie-like crust that shatters just right under your teeth.

View recipe →

Ghostly Caramel Marshmallow Brownies

Ghostly Caramel Marshmallow Brownies

Fudgy dark chocolate brownies marbled with buttery caramel and crowned with gooey marshmallow ghosts for a sweet little scare that hits like a knockout punch.

View recipe →

Green Monster Brownies

Green Monster Brownies

Fudgy, coffee-kissed brownies crowned with a wickedly glossy green drizzle that hits deep chocolate notes and Halloween drama in every bite.

View recipe →

Soft Glazed Lemon Cookies

Soft Glazed Lemon Cookies

Soft, pillowy lemon cookies bursting with citrus and finished with a glossy, tangy glaze that melts as you bite.

View recipe →

Rice Krispie Brains

Rice Krispie Brains

Gooey, buttery Rice Krispie brains with a soft chew and playful pink swirls that scream spooky party without breaking a sweat.

View recipe →

Classic Lemon Bars With Buttery Shortbread Crust

Classic Lemon Bars With Buttery Shortbread Crust

Sharp, sunny lemon curd on a tender, buttery shortbread that shatters just enough to make your fork smile.

View recipe →

Rice Krispies Monster Cake

Rice Krispies Monster Cake

Chewy, ultra-gooey orange Rice Krispies monster cake with candy eyes and wicked grins that hits the sweet spot and makes the room smile.

View recipe →

Fluffy Watermelon Cupcakes

Fluffy Watermelon Cupcakes

Bakery-soft green vanilla cupcakes topped with tangy pink watermelon buttercream, a cheeky summer cupcake that doubles as a bold Halloween dessert.

View recipe →

Raw Meat Rice Krispie Treats

Raw Meat Rice Krispie Treats

Chewy, buttery Rice Krispie treats dressed in a deep scarlet disguise with tangy red velvet vibes and a glossy, raw-meat look that makes people double-take before they swoon.

View recipe →

3-Ingredient Lemon Bars

3-Ingredient Lemon Bars

Chewy-lemony bars with a buttery crumb top and a sturdy, tender crust, all from three pantry heroes and zero fuss.

View recipe →

Soft & Chewy Lemon Sugar Cookies

Soft & Chewy Lemon Sugar Cookies

Buttery edges and plush centers bursting with fresh lemon, finished in a sparkly sugar coat that snaps then melts.

View recipe →

Frosted Sugar Cake Cookies

Frosted Sugar Cake Cookies

Soft, plush sugar cookies with a tender cake-like crumb, finished with a glossy pink vanilla frosting and a playful rain of sprinkles.

View recipe →

Themes