Peanut Butter Rice Krispie Treats How To
Easy Fluffernutter Sandwich – Ready in 5 Minutes with Just 3 Ingredients
There’s something deeply comforting about a Fluffernutter—Creamy Peanut Butter swirled with fluffy marshmallow fluff, pressed between two slices of soft bread. It’s the kind of sandwich that feels like a hug from your childhood. Whether you’re craving a quick snack, packing a nostalgic lunchbox, or just need a little sweetness in your day, this classic combo never fails. And the best part? You don’t need fancy tools or hours in the kitchen. Just three pantry staples and five minutes.

What Is a Fluffernutter?
A Fluffernutter is a simple, no-cook sandwich made with Peanut Butter and marshmallow fluff—two ingredients that somehow create magic when combined. Its origins trace back to early 20th-century America, when marshmallow fluff was first invented in Massachusetts. The name itself is playful, almost silly, but that’s part of its charm. It’s not fancy, not complicated, and definitely not trying to be anything other than pure, sweet comfort.
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Unlike other Peanut Butter sandwiches, the Fluffernutter leans into its gooey, slightly sticky texture. The marshmallow fluff adds a lightness that balances the richness of the peanut butter, creating a sandwich that’s both satisfying and surprisingly light. It’s the kind of thing you’d find in a school lunchbox or made hastily at midnight when you just need something sweet. And honestly? That’s exactly why we love it.
Why You’ll Love This Recipe
This Fluffernutter recipe is the definition of effortless. No oven, no stove, no mess—just assemble and enjoy. It’s perfect for busy mornings, after-school snacks, or even as a quick dessert when you’re craving something sweet but don’t want to bake. Plus, it uses ingredients you probably already have on hand, which means no last-minute grocery runs.
One thing I’ve learned over the years is that the ratio matters. Too much fluff and it gets messy; too much peanut butter and it loses that light, fluffy texture. I like a 1:1 ratio—equal parts peanut butter and marshmallow fluff—spread generously on soft white bread. The slight chew of the bread holds everything together without overpowering the filling. And if you’re feeling adventurous, try it on brioche or cinnamon raisin bread for a subtle twist.
It’s also incredibly kid-friendly. My niece calls it “cloud sandwich” because of how light it feels, and honestly? That’s a pretty perfect description. Whether you’re feeding picky eaters or just treating yourself, this sandwich hits the spot every time.
How to Make a Fluffernutter
Quick Overview
This Fluffernutter comes together in under five minutes with just three ingredients: peanut butter, marshmallow fluff, and bread. No cooking required—just spread, stack, and enjoy. It’s ideal for when you want something sweet but don’t have time (or energy) to turn on the oven. The key is using soft, fresh bread so it doesn’t tear when you bite into it. And don’t skimp on the fillings—this sandwich is all about that gooey center.
Ingredients
You’ll need:
- 2 slices of soft white bread (or your favorite bread)
- 2 tablespoons creamy peanut butter
- 2 tablespoons marshmallow fluff

Step-by-Step Instructions
Start by laying out your two slices of bread on a clean surface. Using a butter knife or small spatula, spread 2 tablespoons of peanut butter evenly on one slice. Then, spread 2 tablespoons of marshmallow fluff on the other slice. Press the two slices together, filling-side in, and gently press down so the layers meld slightly.
If you like your sandwich a little less messy, you can toast the bread lightly first—it adds a nice crunch and helps hold everything together. Just be careful not to over-toast, or the bread might become too crisp and break when you bite in. Slice diagonally if you’re feeling fancy, or just eat it whole. Either way, it’s delicious.
What to Serve It With
A Fluffernutter pairs surprisingly well with a cold glass of milk—classic, simple, and satisfying. If you’re serving it for lunch, add a side of apple slices or baby carrots for a little balance. Some people even enjoy it with a handful of potato chips for that sweet-and-salty combo. And hey, if you’re making it for dessert, a scoop of vanilla Ice Cream on the side turns it into a decadent treat.
Top Tips for Perfecting Your Fluffernutter
Here’s a little secret: warm the marshmallow fluff slightly before spreading. Just leave the jar on the counter for 10 minutes or microwave it for 5 seconds. It becomes easier to spread and blends more smoothly with the peanut butter. Also, if your peanut butter is too thick, stir in a tiny splash of milk or water to loosen it up—just enough to make it spreadable without thinning it too much.
For a fun variation, try adding a thin layer of banana slices or a sprinkle of cinnamon between the peanut butter and fluff. It adds depth without overpowering the original flavor. And if you’re avoiding refined sugar, look for a clean-label marshmallow fluff or make your own with honey and gelatin—it’s a bit more work, but totally worth it.
Storing and Reheating Tips
This sandwich is best eaten fresh, but if you must save it, wrap it tightly in plastic wrap or place it in an airtight container. It’ll keep at room temperature for up to 4 hours—any longer and the bread might get soggy. I don’t recommend refrigerating it, as cold bread tends to dry out and lose that soft texture we love.
If you’ve made it ahead for a packed lunch, keep it in a cooler bag with an ice pack to maintain freshness. And while reheating isn’t necessary, a quick 10-second zap in the microwave can revive a slightly stiff sandwich—just don’t overdo it, or the fluff might get too runny.
Frequently Asked Questions
Final Thoughts

There’s something timeless about a Fluffernutter—it’s not fancy, it’s not trendy, but it’s always comforting. Whether you’re reliving childhood memories or introducing it to someone new, this sandwich has a way of feeling like home. So next time you’re staring into your pantry wondering what to make, grab that jar of fluff, smear on some peanut butter, and take a bite. You might just fall in love all over again.

Peanut Butter Rice Krispie Treats How To
Ingredients
Method
- Line an 8x8-inch baking pan with parchment paper and lightly grease with non-stick spray.
- In a medium saucepan over medium heat, combine peanut butter, corn syrup, and sugar. Stir constantly until the mixture is smooth and begins to bubble slightly, about 3-4 minutes.
- Remove from heat and stir in vanilla extract and mini marshmallows until melted and combined.
- Pour the peanut butter mixture over the Rice Krispies cereal in a large bowl. Stir gently until cereal is evenly coated.
- Press the mixture firmly into the prepared pan using a greased spatula or your hands. Let cool completely before cutting into squares.

Love this simple recipe! The combo of peanut butter and marshmallow fluff is just unbeatable—easy and so satisfying.
Love these! I made them last weekend and my kids devoured them—so simple and delicious.
Love this! I made them last night—super easy and delicious. My kids loved the peanut butter and fluff combo.