Why You’ll Love This Recipe
Fluffernutter Bars are the ultimate comfort food, combining the creamy richness of peanut butter with the sweet, sticky goodness of marshmallow fluff. They are simple to make and are the perfect dessert for sharing with family and friends or enjoying as an afternoon snack. The peanut butter filling adds an extra layer of indulgence, making these bars an unforgettable treat.
Ingredients
For the peanut butter bars:
- 2 ½ cups all-purpose flour
- ½ teaspoon baking soda
- 1 teaspoon salt
- ¾ cup unsalted butter, at room temperature
- ¾ cup smooth peanut butter
- ½ cup sugar
- 1 cup packed light brown sugar
- 2 large eggs, at room temperature
- 2 teaspoons vanilla extract
- 1 (7-ounce) jar Marshmallow Fluff, for topping
For the peanut butter filling:
- ½ cup smooth peanut butter
- 3 tablespoons unsalted butter, at room temperature
- 1 ½ cups powdered sugar, sifted
- 3 tablespoons heavy cream
- ½ teaspoon vanilla extract
(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)
Directions
- Preheat oven: Set the oven to 350°F (175°C). Grease and line a 9×9-inch baking pan with parchment paper, leaving an overhang for easy removal.
- Mix dry ingredients: In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
- Prepare the dough: In a large bowl, cream together the butter, peanut butter, granulated sugar, and brown sugar until light and fluffy, about 2-3 minutes. Add eggs, one at a time, beating well after each addition. Stir in the vanilla extract.
- Combine: Gradually add the flour mixture to the wet ingredients, mixing until just combined.
- Bake: Press the dough evenly into the prepared pan. Bake for 25-30 minutes or until lightly browned and a toothpick inserted comes out clean. Remove from the oven and let it cool slightly.
- Make peanut butter filling: While the bars cool, prepare the peanut butter filling by beating together peanut butter and butter until smooth. Add powdered sugar, vanilla extract, and 2 tablespoons of heavy cream. Beat until smooth, adding an additional tablespoon of heavy cream for spreadability.
- Spread filling: Spread the peanut butter filling over the warm bars using a spoon or offset spatula.
- Top with marshmallow fluff: Warm the marshmallow fluff in the microwave for a few seconds to make it easier to spread. Spread the fluff over the peanut butter filling.
- Cool and serve: Allow the bars to cool completely before slicing into squares. Serve at room temperature.
Servings and Timing
- Servings: 16 bars
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
Variations
- Add chocolate: Drizzle melted chocolate over the top for a chocolate-peanut butter twist.
- Use crunchy peanut butter: For extra texture, swap smooth peanut butter with crunchy peanut butter.
Storage/Reheating
- Storage: Store the bars in an airtight container at room temperature for up to 5 days.
- Reheating: These bars are best served at room temperature, but you can microwave them for 10-15 seconds if you prefer them warm.
FAQs
Can I use natural peanut butter?
Yes, but natural peanut butter may result in a slightly different texture, as it tends to be more oily than traditional peanut butter.
Can I use homemade marshmallow fluff?
Yes, you can use homemade marshmallow fluff in place of store-bought.
Can I freeze these bars?
Yes, you can freeze the bars for up to 2 months. Just wrap them well in plastic wrap and store in an airtight container.
How do I make the bars less sweet?
To reduce sweetness, use less powdered sugar in the filling and fluff topping.
Can I use almond butter instead of peanut butter?
Yes, almond butter would work as a substitute, though the flavor will be different.
Conclusion
Fluffernutter Bars are a deliciously rich and creamy dessert that combines two classic flavors—peanut butter and marshmallow fluff. Whether you’re looking for a sweet treat for a party or something to enjoy with family, these bars are sure to be a hit!
Fluffernutter Bars
Fluffernutter Bars combine the irresistible flavors of peanut butter and marshmallow fluff into a rich, gooey treat. With a soft peanut butter-infused base, creamy peanut butter filling, and a generous layer of marshmallow fluff, these bars are the ultimate indulgence. Perfect for parties, family gatherings, or as a sweet afternoon snack, these easy-to-make bars will satisfy your cravings and leave everyone wanting more.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 16 bars
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
For the Peanut Butter Bars:
- 2 ½ cups all-purpose flour
- ½ teaspoon baking soda
- 1 teaspoon salt
- ¾ cup unsalted butter, at room temperature
- ¾ cup smooth peanut butter
- ½ cup sugar
- 1 cup packed light brown sugar
- 2 large eggs, at room temperature
- 2 teaspoons vanilla extract
- 1 (7-ounce) jar Marshmallow Fluff, for topping
For the Peanut Butter Filling:
- ½ cup smooth peanut butter
- 3 tablespoons unsalted butter, at room temperature
- 1 ½ cups powdered sugar, sifted
- 3 tablespoons heavy cream
- ½ teaspoon vanilla extract
Instructions
- Preheat oven: Set the oven to 350°F (175°C). Grease and line a 9×9-inch baking pan with parchment paper, leaving an overhang for easy removal.
- Mix dry ingredients: In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
- Prepare dough: In a large bowl, cream together butter, peanut butter, granulated sugar, and brown sugar until light and fluffy (about 2-3 minutes). Add eggs, one at a time, beating well after each addition. Stir in vanilla extract.
- Combine wet and dry ingredients: Gradually add the flour mixture to the wet ingredients and mix until just combined.
- Bake: Press dough evenly into the prepared pan and bake for 25-30 minutes or until lightly browned and a toothpick inserted comes out clean. Let it cool slightly.
- Make peanut butter filling: In a bowl, beat together peanut butter and butter until smooth. Add powdered sugar, vanilla extract, and 2 tablespoons of heavy cream. Beat until smooth, adding an additional tablespoon of heavy cream for spreadability.
- Spread filling: Spread the peanut butter filling over the warm bars with a spoon or offset spatula.
- Top with marshmallow fluff: Warm the marshmallow fluff in the microwave for a few seconds to make it easier to spread. Spread it over the peanut butter filling.
- Cool and serve: Allow bars to cool completely before slicing into squares. Serve at room temperature.
Notes
- Add Chocolate: Drizzle melted chocolate over the top for a chocolate-peanut butter twist.
- Use Crunchy Peanut Butter: For extra texture, swap smooth peanut butter with crunchy peanut butter.
