Name: Irresistible Fluffernutter Bars: A Sweet, Gooey Dream
Prep time: 15 min
Cook time: 25 min
Total time: 100 min
Ingredients: 1/2 cup Butter (softened; provides richness and moisture); 1/3 cup Peanut Butter (adds flavor and helps bind ingredients); 1 cup Brown Sugar (packed; provides sweetness and moisture); 1 large Egg (acts as a binder for the cookie dough); 1 teaspoon Vanilla Extract (adds flavor); 1 1/4 cups All-Purpose Flour (provides structure); 2/3 cup Chocolate Chips (offers additional chocolate flavor); 9-12 pieces Peanut Butter Cups (adds rich peanut butter and chocolate flavor); 7 ounces Marshmallow Creme/Fluff (creates the signature gooey layer)

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As I sift through the last remnants of childhood memories, the aroma of these Fluffernutter Bars makes my heart race. The unique combination of creamy peanut butter, chocolate, and fluffy marshmallow evokes that blissful treat I always craved. This homemade dessert is not just a delightful indulgence; it’s a perfect solution for busy evenings or unexpected guests—quick to prepare and irresistibly delicious. Each layer, from the gooey marshmallow to the rich cookie base, creates an unforgettable experience that will have everyone reaching for seconds. Are you ready to craft this gooey masterpiece that’ll transport you back to those carefree days? Let’s dive into the world of Fluffernutter Bars!

Why are Fluffernutter Bars a must-try?

Decadent Fluffernutter Bars are the ultimate indulgence, marrying rich chocolate and creamy peanut butter in a delightful treat. Quick to prepare, this recipe is perfect for those busy evenings or spontaneous get-togethers. Crowd-pleaser alert! Their mouthwatering sweetness will lure everyone back for seconds! If you love combining flavors like this, check out my Layer Everything Bars for another exciting dessert option. Vibrant textures with gooey layers of marshmallow and cookie will transport you straight to dessert heaven!

Fluffernutter Bars Ingredients

For the Cookie Base

Butter – 1/2 cup softened; provides richness and moisture to the cookie dough. Substitute with margarine for a dairy-free option.
Peanut Butter – 1/3 cup; adds flavor and helps bind the ingredients. Use creamy or crunchy based on preference.
Brown Sugar – 1 cup packed; provides sweetness and moisture. Can be substituted with coconut sugar for a healthier version.
Egg – 1 large; acts as a binder for the cookie dough. No substitute recommended, as eggs are essential for moisture and structure.
Vanilla Extract – 1 teaspoon; adds flavor. Use pure vanilla for best results; imitation can be a cost-saving alternative.
All-Purpose Flour – 1 1/4 cups; provides structure. For gluten-free, substitute with a 1:1 gluten-free flour blend.
Chocolate Chips – 2/3 cup; offers additional chocolate flavor. Substitute with dark chocolate or white chocolate chips as desired.

For the Layers

Peanut Butter Cups – 9-12 regular-sized; adds a rich peanut butter and chocolate flavor. Substitute with any chocolate candy or chopped chocolate.
Marshmallow Creme/Fluff – 7 ounces; creates the signature gooey layer. If unavailable, you can use melted marshmallows (about 2 cups).

This delectable recipe for Fluffernutter Bars promises a delightful experience filled with rich flavors and creamy textures!

Step‑by‑Step Instructions for Fluffernutter Bars

Step 1: Preheat the Oven
Start by preheating your oven to 350°F (175°C). While it’s heating up, line an 8 x 11 inch baking pan with parchment paper, allowing some overhang on the edges. This will make it easier to lift out your Fluffernutter Bars once they’re baked. Ensure your pan is ready so you can quickly pour in the batter once mixed.

Step 2: Cream the Butter and Sugar
In a large mixing bowl, add your softened butter and brown sugar, then cream them together using a hand mixer or stand mixer. Beat for about 3 minutes until the mixture becomes light and fluffy. You should see a pale color change and a fluffy texture that indicates it’s ready for the next ingredients.

Step 3: Incorporate Wet Ingredients
Next, add the egg, peanut butter, and vanilla extract to the creamed mixture. Mix gently until the ingredients are well combined and smooth. The batter will become thicker and slightly sticky—this is the perfect consistency for your Fluffernutter Bars’ delicious cookie base.

Step 4: Add the Dry Ingredients
Gradually sift in the all-purpose flour, mixing until everything is fully incorporated. Once you no longer see any dry flour, fold in the chocolate chips with a spatula or wooden spoon. This ensures the chocolate chips are evenly distributed throughout, giving every bite of your Fluffernutter Bars a delightful burst of flavor.

Step 5: Press the Dough into the Pan
Take about two-thirds of the cookie dough mixture and press it evenly into the prepared baking pan. Use your fingers or a spatula to create a smooth, even layer, leaving some space around the edges for the sides later. The base should look somewhat flattened and cohesive, ready to support the delicious layers to come.

Step 6: Add the Peanut Butter Cups
Evenly distribute the peanut butter cups over the pressed cookie layer. Make sure they are spread out properly, as they’ll melt beautifully during baking. Following with this, gently spoon the marshmallow fluff over the peanut butter cups, spreading it out to cover them completely. This gooey layer will bring that signature sweet bliss to your Fluffernutter Bars.

Step 7: Crumble the Remaining Dough
Using your hands, crumble the remaining cookie dough over the top of the marshmallow fluff. Press it lightly with your fingers to ensure the top layer adheres, creating a cozy blanket for your bars. The sight of the uneven texture bubbles with melted chocolate and fluffy marshmallow underneath is sure to entice.

Step 8: Bake and Cool
Carefully place the baking pan in your preheated oven and bake for about 25 minutes. Keep an eye on the edges; they should turn golden brown while the center remains slightly soft—this is how you know your Fluffernutter Bars are baking to perfection. Once done, remove from the oven and allow them to cool in the pan for 1 hour to settle before lifting them out using the parchment paper for easy slicing.

Make Ahead Options

These Fluffernutter Bars are perfect for meal prep enthusiasts looking to save time during busy weeknights! You can prepare the cookie dough up to 24 hours in advance by mixing all the ingredients and refrigerating it in an airtight container to maintain freshness. Additionally, you can layer the peanut butter cups and marshmallow fluff in the pan ahead of time (up to 3 days) and cover tightly with plastic wrap. When you’re ready to bake, simply crumble the reserved cookie dough on top and pop it in the oven. This will ensure the bars are just as delicious and gooey, with minimal effort when it’s time to serve these delightful treats!

Fluffernutter Bars: Endless Customizations

Feel free to let your creativity shine as you make these Fluffernutter Bars your own with exciting twists and swaps!

Nut-Free: Swap peanut butter for sun butter or soy nut butter for a nut-free version that’s just as indulgent.
Vegan: Use flax eggs and vegan butter in place of egg and regular butter for a plant-based delight everyone can enjoy.
Extra Crunch: Mix in crispy rice cereal or crushed pretzels into the dough for an added crunch that contrasts beautifully with the gooey filling.

Layering has its magic; you may want to sprinkle in some mini marshmallows or crushed graham crackers on top to evoke a classic s’mores flavor.

Loaded Chocolate: Replace chocolate chips with chunks of your favorite chocolate bar or even caramel-filled candies for an extra sweet surprise.
Spiced Up: Add a pinch of cinnamon or a swirl of pumpkin spice for a warm, cozy finish that’s perfect for fall gatherings.
S’mores Twist: For a unique twist, incorporate melted chocolate and a layer of graham cracker crumbs in between the cookie layers for that classic s’mores taste.

Get inspired to create more delightful treats with ideas from my Layer Everything Bars or explore a refreshing take on desserts with other creative combinations!

Expert Tips for Fluffernutter Bars

Butter Matters: Ensure your butter is at room temperature for easy mixing and a fluffy texture in your cookie base. Cold butter can lead to uneven baking.
Peanut Butter Preference: Choose creamy or crunchy peanut butter based on your taste. Avoid natural kinds as they alter the final texture of the Fluffernutter Bars.
Layering Technique: Make sure to evenly spread the peanut butter cups and marshmallow fluff. This ensures every bite is deliciously gooey and sweet, giving you the best indulgent treat.
Cooling Time: Resist the temptation to slice too soon! Allow the bars to cool completely in the pan for at least an hour; this will set their structure and make slicing easier.
Flavor Experimentation: Consider adding a sprinkle of sea salt on top before baking. It contrasts beautifully with the sweetness of the Fluffernutter Bars, enhancing overall flavor!

What to Serve with Fluffernutter Bars

Elevate your dessert experience by pairing these irresistible bars with delightful accompaniments that will satisfy every sweet tooth.

Vanilla Ice Cream: Creamy, frozen perfection that contrasts with the warm, gooey bars, making for a classic dessert combination.
Chocolate Sauce: Drizzle over the bars for an indulgent finish; it amplifies the chocolate flavor and adds extra sweetness.
Fresh Berries: The tartness of raspberries or strawberries balances the sweetness wonderfully, creating a refreshing contrast on your palate.
Whipped Cream: Light and airy, this addition complements the dense bars while enhancing the overall dessert experience.
Milk: A tall glass of cold milk is the quintessential pairing, washing down the richness of the bars while adding a nostalgic touch.
Peanut Butter Drizzle: A simple blend of peanut butter and honey creates a rich sauce that complements the bar’s flavors perfectly.
Coffee: Brewed coffee provides a robust counterpoint to the sweetness of the bars, making it a great pairing for those who love a balanced dessert.
Salted Caramel Sauce: Elevate your bars with a drizzle of salted caramel; its sweetness and savoriness create a decadent experience.
Tea: A warm cup of chai or herbal tea can soothe the senses and balance the richness of these naughty treats.
Ice Cream Sandwich: Turn the bars into an ice cream sandwich by placing a scoop of your favorite flavor in between two pieces for an extra layer of joy!

Storage Tips for Fluffernutter Bars

Room Temperature: Store Fluffernutter Bars in an airtight container for up to 2-3 days at room temperature. This keeps them soft and chewy, perfect for a quick indulgence!
Fridge: For a firmer texture, refrigerate your bars in an airtight container for up to a week. This enhances the flavors and helps them set even better.
Freezer: Freeze Fluffernutter Bars for up to 2 months. Wrap individual bars tightly in plastic wrap and place them in a freezer-safe container to maintain freshness.
Reheating: To enjoy a warm bar, simply microwave for about 15-20 seconds. This revives the gooeyness of the marshmallow fluff and melts the chocolate slightly for a deliciously nostalgic treat!

Fluffernutter Bars Recipe FAQs

How should I select my peanut butter for Fluffernutter Bars?
Absolutely! Choosing the right peanut butter is crucial. For the richest flavor, I recommend using creamy peanut butter, as it blends seamlessly into the dough. If you enjoy a little crunch, opt for crunchy peanut butter. Just avoid natural peanut butter, as it tends to have an oil separation that can alter the texture of your bars, making them less gooey.

What’s the best way to store leftover Fluffernutter Bars?
Very! To keep your Fluffernutter Bars fresh, store them in an airtight container at room temperature for up to 2-3 days. If you want to keep them longer, refrigerate them for up to a week to enhance their flavors and help set the texture. Just be sure to let them come to room temperature before indulging!

Can I freeze Fluffernutter Bars? If so, how?
Absolutely! You can freeze your Fluffernutter Bars for up to 2 months. To do this, first, cut them into individual bars. Then, tightly wrap each bar in plastic wrap and place them in a freezer-safe container to protect them from freezer burn. When you’re ready to enjoy one, just microwave it for about 15-20 seconds to get that gooey goodness back!

What if my Fluffernutter Bars come out too crumbly?
Oh no! If your bars turn out crumbly, it might be due to dry ingredients not being properly mixed or ratios being off. To troubleshoot, ensure your butter is softened correctly and that you’re measuring accurately. If necessary, you can add a tablespoon of warm water or more melted butter to the mixture. Remember to mix until just combined, as over-mixing can dry them out too.

Are Fluffernutter Bars suitable for people with nut allergies?
Very! While traditional Fluffernutter Bars contain peanut butter, you can easily modify the recipe for nut allergies. I suggest using sunflower seed butter or a seed butter alternative instead of peanut butter. Make sure to check any candy or chocolate you use to ensure they don’t contain nuts. This way, everyone can enjoy this delightful treat!