Fruity Pebbles Marshmallow Treats Recipe

Prep Time	Cook Time	Total Time
10 min	5 min	15 min

How to Make Fruity Pebbles Marshmallow Treats

Prep mode (keeps screen awake)

Prepare the pan

Lightly coat a 9x13 inch baking pan with nonstick spray or butter, then set it aside.
Melt the butter

Add the butter to a large pot and melt it over low heat, stirring often, until completely smooth.
Keep the heat low to prevent browning, which can make the treats taste a little toasty and less fruity.
Melt the marshmallows

Add the mini marshmallows, salt, and vanilla to the pot and stir until the mixture starts to melt.
Continue stirring over low heat until almost completely smooth, leaving just a few small marshmallow bits for extra gooey pockets.
Combine with cereal

Place the Fruity Pebbles in a large mixing bowl, then pour the warm marshmallow mixture over the cereal.
Use a greased spatula to gently fold until the cereal is evenly coated, working quickly before the mixture firms up.
Press into the pan

Transfer the mixture into the prepared pan and lightly press it into an even layer with the greased spatula.
Do not pack it down too firmly, or the bars will set very dense and lose their soft, chewy texture.
Cool and slice

Let the pan sit at room temperature until the treats are completely cool and firm, about 30 to 45 minutes.
Cut into squares or rectangles and serve, wiping the knife between cuts for cleaner looking edges.

Use fresh marshmallows: Older marshmallows dry out and resist melting, which makes the treats tougher and less gooey.
Grease everything that touches the mixture: Lightly coat your spatula, mixing bowl, and even your hands to keep the sticky mixture from clumping and tearing.
Adjust pan size for thickness: For extra thick bars, use an 8x8 inch pan; for thinner party bites, use a half sheet pan.
Mix gently to protect the cereal: Stir with a folding motion instead of vigorous stirring, which helps keep the cereal from breaking into powdery crumbs.
Line the pan for easy lifting: Add a parchment sling with overhang before greasing so you can lift the whole slab out cleanly for cutting.

Why did my Fruity Pebbles treats turn out hard instead of soft and chewy?: They likely cooked too long or over higher heat, which overcooks the sugar in the marshmallows. Use low heat, stir constantly, and remove the pot as soon as the marshmallows are almost fully melted. Also avoid pressing the mixture too firmly into the pan.
Can I make these treats in the microwave instead of on the stove?: Yes, melt the butter and marshmallows together in a large microwave-safe bowl in 30 second bursts. Stir between each burst until smooth, then quickly mix in the cereal and press into the prepared pan.
How should I store Fruity Pebbles marshmallow treats, and how long do they stay fresh?: Store the cooled bars in an airtight container at room temperature, with parchment between layers to prevent sticking. They taste best within two days, but usually stay pleasant and chewy for up to three days.
Can I use regular size marshmallows instead of mini marshmallows?: Yes, regular marshmallows work, but they take longer to melt and may need more stirring for a smooth mixture. Measure by weight if possible, aiming for about 10 ounces total marshmallows.
Can I add extra mix-ins like candy or white chocolate?: You can fold in up to one cup of extras, like mini white chocolate chips or sprinkles, after coating the cereal. Avoid very heavy or large pieces, which sink and make slicing difficult.

Rated 5 ★ (out of 5) based on 4 reviews.
Would you like to add yours?

Judith: This is so good! I tossed in a handful of sprinkles for a little extra fun. They are super sweet, and they stay soft the next day. — 5 ★

Eunice: Love the sprinkle addition, Judith!
Carol Kaminska, Phoenix: This sounds good. 🤔 I haven't tried the recipe yet so I cannot rate it. But I was wondering if a person could use Rice Krispies or maybe Cocoa Pebbles in place of the Fruity Pebbles? Along with that question would you need to adjust any of the other things like the vanilla or salt if you switched the cereal? — 5 ★

Eunice: Yes, you can swap in Rice Krispies or Cocoa Pebbles 1:1 (same 8 cups) with no other changes. Keep the vanilla and salt as written; they balance sweetness and bring out the flavor. Only tweak if needed: Cocoa Pebbles can taste a bit richer, so you can reduce the vanilla slightly if you prefer, but it’s optional.
Henry, Charlotte: These turned out perfectly soft and gooey with that bright fruity flavor. Keeping the heat low was key, and leaving a few little marshmallow bits made the best pockets. I also took your advice and pressed super lightly so they stayed nice and chewy. Will definitely make again for parties! — 5 ★

Eunice: Happy to hear that, Henry!
Annette: These turned out perfectly soft and super gooey, and the vanilla and pinch of salt really made the fruity flavor pop! — 5 ★

Eunice: So happy they came out soft and gooey for you, Annette!