Fluffernutter Bars

The Ultimate Sweet, Gooey, Peanut Butter & Marshmallow Treat You Didn’t Know You Needed

If you’re a fan of the classic fluffernutter sandwich—sweet marshmallow fluff and creamy peanut butter piled high on soft bread—then you’re about to fall head over heels for Fluffernutter Bars. These bars take all those nostalgic flavors and turn them into a rich, gooey, chewy dessert that’s perfect for sharing (or sneaking bites when no one’s looking). Imagine biting into a soft, peanut buttery base layered with clouds of marshmallow fluff—pure childhood magic in every bite. Trust me, this one’s a total game-changer.

Why You’ll Love Fluffernutter Bars

Here’s why these bars are destined to be your new favorite treat:

Nostalgic & Fun: All the fluffernutter flavors you love in a convenient bar form.

Easy to Make: No fancy skills needed—just mix, layer, and bake.

Perfect for Any Occasion: Great for potlucks, lunchboxes, or anytime you need a sweet pick-me-up.

Comforting & Satisfying: The perfect balance of peanut butter richness and marshmallow sweetness.

Customizable: Add chocolate chips, nuts, or a drizzle of chocolate for extra flair.

Ingredients in Fluffernutter Bars

Let’s talk about the simple magic that brings these bars to life:

Creamy Peanut Butter

Rich and smooth, it’s the star that holds everything together.

Marshmallow Fluff

Sweet, pillowy, and perfectly gooey.

Sugar

Adds sweetness and structure.

Butter

For that buttery richness and moisture.

All-Purpose Flour

Creates a soft but sturdy base.

Baking Powder

Gives the bars a little lift.

Salt

Balances the sweetness and enhances flavor.

Vanilla Extract

Adds a warm, inviting aroma.

Optional Add-ins

Chocolate chips, chopped peanuts, or a drizzle of melted chocolate for extra indulgence.

(Note: the full ingredients list, including measurements, is provided in the recipe card directly below.)

Instructions

Ready to bake these irresistibly gooey bars? Here’s the step-by-step:

Preheat Oven

Set your oven to 350°F (175°C) and grease or line a baking pan with parchment paper.

Make the Base

In a bowl, mix peanut butter, melted butter, sugar, vanilla, and salt until smooth and combined.

Add Dry Ingredients

Stir in flour and baking powder until just mixed into a thick dough.

Press Base into Pan

Spread the dough evenly into your prepared pan, pressing down firmly.

Layer the Marshmallow Fluff

Spread a generous layer of marshmallow fluff over the peanut butter base.

Add Optional Toppings

If you like, sprinkle chocolate chips or chopped nuts over the fluff layer.

Bake to Perfection

Bake for 20-25 minutes, or until edges are golden and the top looks set but still gooey.

Cool and Slice

Allow the bars to cool completely before cutting into squares.

Serve and Enjoy

Dive into these sweet, chewy bars with a glass of cold milk or your favorite cup of coffee.

Nutrition Facts

Servings: 12 bars
Calories per serving: [Calorie count per bar]

Preparation Time

Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes

How to Serve Fluffernutter Bars

These bars are delightful on their own, but here are some ideas to elevate the experience:

With a Cold Drink: Milk, iced coffee, or even hot chocolate pairs perfectly.

For Dessert: Serve alongside vanilla ice cream for an indulgent treat.

Snack Time: Pack them for a sweet afternoon pick-me-up.

Party Platter: Cut into bite-sized pieces for sharing at gatherings.

Additional Tips

Use Fresh Marshmallow Fluff: For that perfect gooey texture.

Don’t Overbake: Keep an eye on the bars to ensure they stay soft and chewy.

Mix Add-ins Carefully: Fold in chocolate chips or nuts gently to avoid deflating the dough.

Store Properly: Keep in an airtight container at room temperature for up to 3 days.

Freeze for Later: Wrap tightly and freeze for up to 2 months; thaw at room temperature.

FAQ Section

Q1: Can I use natural peanut butter?
A1: Yes, but the texture may be slightly different—natural peanut butter can make the dough a bit softer.

Q2: Can I substitute marshmallow fluff with mini marshmallows?
A2: You can try, but fluff spreads more easily for a smooth layer.

Q3: Are these bars gluten-free?
A3: Not as written, but you can use gluten-free flour to adapt the recipe.

Q4: Can I add chocolate chips?
A4: Definitely! Chocolate chips on top or mixed into the dough add delicious flair.

Q5: How should I store leftover bars?
A5: Store in an airtight container at room temperature for 3 days or refrigerate for longer freshness.

Q6: Can I double the recipe?
A6: Yes! Use a larger baking pan and adjust baking time accordingly.

Q7: Can I make these vegan?
A7: Use plant-based butter and peanut butter, plus check that your marshmallow fluff is vegan-friendly.

Q8: What’s the best pan size?
A8: An 8×8-inch (20×20 cm) pan works perfectly.

Q9: Can I add nuts for crunch?
A9: Absolutely—chopped peanuts or walnuts are delicious additions.

Q10: How to keep the bars from sticking?
A10: Line the pan with parchment paper for easy removal.

Conclusion

Fluffernutter Bars are a nostalgic, gooey, peanut butter-and-marshmallow dream that’s easy to make and impossible to resist. Whether you’re baking for a crowd or just craving something sweet and comforting, these bars deliver all the joy of a fluffernutter sandwich in every chewy bite. Give them a try—you’ll be hooked from the very first slice!

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