Fluffernutter Bars
Here’s a rich, sweet, and indulgent treat that’s pure happiness in a bar Fluffernutter Bars! Trust me, you’re going to love this it’s a game-changer for your dessert table. The combination of creamy peanut butter, fluffy marshmallow, and buttery base makes these bars a perfect blend of textures and flavors.
Why You’ll Love Fluffernutter Bars
This recipe isn’t just about the ingredients it’s about creating pure moments of happiness. Whether you serve these at a picnic, potluck, or simply when you need a little treat, these Fluffernutter Bars bring pure indulgence to every bite. Here’s why it’s a favorite:
Versatile: Great for any gathering — from birthday parties to holiday treats.
Budget-Friendly: Few ingredients come together to produce something rich without draining your wallet.
Quick and Easy: The batter comes together in minutes — perfect when you need a last-minute dessert.
Customizable: Try adding chocolate chips or chopped nuts for texture.
Crowd-Pleasing: Sweet, creamy, rich — a universal favorite for all ages.
Ingredients in Fluffernutter Bars
Here’s the magic of these rich and creamy bars — made with simple ingredients you probably already have at home.
All-Purpose Flour: Gives the base structure and texture.
Brown Sugar: Adds rich molasses flavor and softness.
Peanut Butter: The key ingredient for rich, creamy texture.
Eggs: Bind everything together and add softness.
Baking Powder: Helps the batter rise slightly.
Fluff (Marshmallow Cream): Adds pure fluffiness and a sweet twist.
Vanilla Extract: Enhances all the other flavors.
Salt: Balances the sweetness.
(Note: The full ingredients list, including measurements, is provided in the recipe card directly below).

Instructions
Let’s dive into the steps to create these rich, creamy Fluffernutter Bars:
Prepare Your Pan:
Preheat your oven to 350°F. Line a 9×13-inch pan with parchment paper or foil for easy removal.
Combine:
In a large bowl, combine brown sugar, peanut butter, and eggs. Mix until smooth and creamy.
Mix:
Add in the flour, baking powder, vanilla, and a pinch of salt. Fold in until well blended.
Layer:
Press about 2/3 of the batter into the prepared pan. Spread fluff evenly on top. Then drop spoonfuls of the remaining batter over the fluff.
Bake:
Bake for 20-25 minutes, until the top starts to turn a light golden brown.
Cool:
Remove from oven and let cool completely in the pan. Once cooled, lift from pan and cut into squares.
Nutrition Facts:
Servings: 16
Calories per serving: 250
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
How to Serve Fluffernutter Bars
These rich, creamy bars pair wonderfully with:
- A cold glass of milk
- A warm cup of coffee or hot chocolate
- A dollop of vanilla ice cream for a rich twist
- Fresh strawberries or bananas on the side
Additional Tips
Here are some extra tips to help you get the most out of this recipe:
- Chill the fluff first if you want it to be a little easier to spread.
- Try adding chopped chocolate or peanut butter chips to the batter.
- Sprinkle a little coarse sea salt on top for a sophisticated sweet-and-salty flavor.
- Line your pan with parchment for easy removal and cutting.
- Let the bars cool completely before cutting for a neater slice.
FAQ’s
1. May I use creamy or crunchy peanut butter?
Of course — creamy is more traditional, but crunchy adds a nice texture.
2. Could I use natural peanut butter instead?
Yes — just be sure to mix it well first to avoid separation.
3. May I omit the fluff if I want it less sweet?
Certainly — you can omit it or reduce the amount.
4. Could I add chocolate chips to the batter?
Yes — it adds a rich twist to these already indulgent bars.
5. May I use a different nut butter instead of peanut butter?
Of course — you can substitute with cashew or almond butter.
6. Could I cut these into small bite-sized squares?
Certainly — this makes them perfect for parties or snacking.
7. May I freeze them for later?
Yes — wrap well and freeze for up to 3 months.
8. Could I double the recipe for a crowd?
Of course — just use a larger pan and adjust the cooking time if necessary.
9. May I use marshmallows instead of fluff?
Yes — mini marshmallows can be a fun substitute.
10. Could I add a frosting or a chocolate layer on top?
Of course — a thin layer of frosting or chocolate ganache would be delicious.
Conclusion
Fluffernutter Bars are rich, creamy, sweet, and completely indulgent — pure happiness in a simple treat. Whether you serve them at a party or keep them all to yourself (I won’t tell!), these bars are sure to become a family favorite. So grab your ingredients, preheat that oven, and let’s make something wonderful together!
Print
Fluffernutter Bars
- Prep Time: 10 minutes
- Cook Time: 25 minutes
- Total Time: 35 minutes
- Yield: About 16 bars 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Description
Fluffernutter Bars bring together creamy peanut butter, sweet marshmallow fluff, and a buttery base — all in a rich, soft, and indulgent treat!
Ingredients
- 1/2 cup (1 stick) unsalted butter, room temperature
- 1/2 cup creamy peanut butter
- 1/2 cup brown sugar
- 1/4 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 cup all-purpose flour
- 1 teaspoon baking soda
- 1/4 teaspoon kosher salt
- 1/2 cup marshmallow fluff
Instructions
- Preheat oven to 350°F (175°C) and grease a 9×9-inch baking pan.
- Cream together the butter, peanut butter, brown sugar, and granulated sugar until smooth and fluffy.
- Add in the egg and vanilla extract; blend until well combined.
- Mix in the flour, baking soda, and kosher salt.
- Spread 2/3 of the batter evenly into the prepared pan.
- Drop spoonfuls of marshmallow fluff on top of batter and swirl gently.
- Drop remaining batter by spoonfuls over fluff and smooth slightly.
- Bake for 20-25 minutes or until the center is set. Let cool completely before cutting into bars.
Notes
- For a fun twist, add chocolate chips or chopped peanut brittle.
- Fluffernutter bars stay moist and rich for days in an airtight container.
- Pair with a glass of cold milk for the perfect treat.
Nutrition
- Serving Size: 1 bar
- Calories: 220
- Sugar: 18g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 20mg
Keywords: Fluffernutter, peanut butter, marshmallow fluff, rich, buttery, bars