3-Ingredient Marshmallow Rice Krispie Bubbles That Wow

Name: 3-Ingredient Marshmallow Rice Krispie Bubbles That Wow
Prep time: 5 min
Cook time: 5 min
Total time: 10 min
Cuisine: American
Ingredients: 3 tablespoons butter; 4 cups mini marshmallows; 6 cups Rice Krispies cereal

Author: lia

Published: August 1, 2025

Updated: September 14, 2025

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Oh my gosh, do I love these Marshmallow Rice Krispie Bubbles! They’re my go-to when I need something sweet in a hurry – no oven required, just melt, mix, and press. I swear, the smell of toasting marshmallows takes me straight back to childhood sleepovers, where my best friend and I would devour an entire pan in one sitting (no regrets!). This version stays perfectly chewy with that addicting “snap” we all crave. Whether you’re making them with kids or just treating yourself after a long day, they’re pure happy-in-a-pan magic.

Why You’ll Love This Marshmallow Rice Krispie Bubbles Recipe

Oh, where do I even start? These little bubbly squares are my emergency happiness button—here’s why you’ll adore them:

Done in 10 minutes flat – because sometimes you need instant gratification
Zero baking required – just your stovetop and a dream
Only 3 ingredients you probably have right now
Kid-approved magic – my niece calls them “edible clouds”
That perfect texture – crispy outside, chewy inside, with that nostalgic *snap*

Seriously, it’s like childhood joy in every bite.

Ingredients for Marshmallow Rice Krispie Bubbles

Okay, here’s the beautiful part – you only need THREE simple things to make magic happen! But listen, quality matters here (trust me, I learned the hard way when I grabbed stale marshmallows once – tragic). Here’s exactly what you’ll need:

3 tablespoons unsalted butter – melt it slow so it doesn’t brown (salted works in a pinch, but cut back any extra salt)
4 cups fresh mini marshmallows – the mini ones melt like a dream compared to big puffy ones
6 cups Rice Krispies cereal – generic crispy rice works too, but name-brand gives that perfect nostalgic crunch

See? Told you it was simple! Now let’s get bubbling.

Equipment You’ll Need

Don’t worry—you won’t need any fancy gadgets here! Just grab these basics from your kitchen:

A large saucepan – big enough to stir everything without making a mess
A sturdy spatula – trust me, you’ll want one that can handle sticky marshmallow glue
A greased 9×13-inch pan – or parchment paper if you’re all about easy cleanup

See? Told you it was easy. Now let’s get to the fun part!

How to Make Marshmallow Rice Krispie Bubbles

Alright, let’s get to the good stuff! Making these is seriously foolproof—just follow these simple steps and you’ll have perfect bubbly squares in no time. The key? Work fast while everything’s warm and sticky (but not so fast you burn the marshmallows—been there, done that, cried over ruined treats).

Step 1: Melt the Butter

First, melt your butter over low heat—I mean it, keep that flame low! You want it just melted, not browned or sizzling. This takes about 2 minutes in my old saucepan. Patience here prevents weird butter flavors later.

Step 2: Add Marshmallows

Dump in those mini marshmallows and stir constantly! They’ll go from fluffy to glossy puddles in about 3 minutes. No lumps allowed—keep stirring until it’s completely smooth like white lava. Pro tip: scrape the bottom to prevent scorching!

Step 3: Mix in Rice Krispies

Turn off the heat and pour in the cereal. Now fold gently but thoroughly—you want every single crispy piece coated in that marshmallow glue. I use a folding motion to keep the bubbles light rather than crushing them.

Step 4: Press and Cool

Here’s the messy fun part! Grease your hands (or spatula) with butter or nonstick spray and press the mixture firmly into your prepared pan. Don’t smash it flat—just enough to hold together. Let it cool completely (about 30 minutes) before cutting, or you’ll get gooey strings everywhere!

Marshmallow Rice Krispie Bubbles - detail 1

Tips for Perfect Marshmallow Rice Krispie Bubbles

Alright, confession time—I’ve messed up enough batches to know exactly what makes these treats perfect. Here are my hard-earned secrets:

Fresh marshmallows only! Stale ones turn into chewy cement (learned that the sad way).
Move like the wind once the marshmallows melt—that mixture sets FAST.
Press firmly with greased hands—too light and they crumble; too hard and they get dense.
Store in an airtight container—they’ll stay soft and chewy for days (if they last that long).
Bonus trick: For extra bubbles, gently fold in an extra handful of cereal at the end.

Now go forth and make marshmallow magic!

Variations for Marshmallow Rice Krispie Bubbles

Okay, here’s where we get crazy fun! Once you’ve mastered the classic, try these easy twists that my taste-testers (aka my neighbors, coworkers, and very enthusiastic nieces) absolutely loved:

Chocolate explosion: Stir in 1/2 cup mini chocolate chips right after the cereal—they’ll melt slightly into gooey pockets
Peanut butter magic: Swirl in 1/4 cup creamy PB with the melted marshmallows (heaven!)
Birthday party vibes: Mix in rainbow sprinkles for colorful crunch
Chocolate lover’s dream: Use cocoa Krispies instead of regular—double the chocolatey goodness
Salted caramel: Drizzle with caramel sauce and a pinch of sea salt after pressing

See? Endless ways to play with your food!

Marshmallow Rice Krispie Bubbles - detail 2

Storage and Serving Suggestions

Here’s the best part—these stay delicious for days! Pop them in an airtight container at room temperature, and they’ll keep that perfect chew for up to 3 days (though let’s be real—they never last that long). Want to get fancy? Roll warm scoops into balls instead of squares for bite-sized cuteness. Pro tip: if they stiffen up, a quick 5-second microwave zap brings back that fresh-off-the-pan magic!

Marshmallow Rice Krispie Bubbles Nutrition Information

Okay, let’s be real—these aren’t health food, but everything in moderation, right? Based on my favorite brands (and let’s face it, generous square sizes), each piece comes out to about 120 calories, with 8g sugar and 3g fat. Of course, your exact numbers might dance around a bit depending on your butter and cereal choices. But hey, that’s why we call them treats—pure joy in every bite!

Frequently Asked Questions

I get asked these ALL the time – here are the answers that’ll save you from making my early mistakes:

Can I use big marshmallows? Sure, but minis melt faster and smoother (just chop the big ones if that’s all you’ve got).
Help! Everything’s sticking! Grease EVERYTHING – your hands, the spatula, the pan. Crisco works better than butter here.
Can I make these ahead? Absolutely! They’ll stay perfect for 2 days in an airtight container (if you can resist eating them).
Why are mine hard as rocks? You overcooked the marshmallows – low and slow is the way to go, friend!

Now go make some magic – and tag me so I can see your bubbly creations!

For more delicious inspiration, check out our Pinterest page!