Fluffernutter Bars

Fluffernutter Bars are the perfect treat to bring a little extra sweetness to your day. With their soft, chewy interior and delightful creamy marshmallow topping, these bars are a nostalgic nod to the classic fluffernutter sandwich. Great for family gatherings, after-school snacks, or simply satisfying that sweet tooth, they are quick to prepare and sure to be a hit among both kids and adults. My own kids can’t resist them, and they vanish faster than I can cut them!

Why Make This Recipe

You’ll love these Fluffernutter Bars for their ease and deliciousness. These desserts come together in no time, and the combination of peanut butter and marshmallow fluff creates a comforting flavor profile that recalls childhood memories. The chewy texture and sweet topping are sure to bring smiles at any gathering or family meal.

"This cake disappeared in minutes at our family gathering, definitely a keeper," says a happy home baker.

Friends and family will appreciate your baking skills, and you’ll find yourself making these bars again and again. They’re not only quick to make, but they also require common pantry staples, making them a convenient option for any occasion.

How to Make Fluffernutter Bars

Creating these Fluffernutter Bars is a breeze! Start by preheating your oven and preparing your baking pan. You’ll combine dry ingredients in one bowl and cream the sugars and butter together in another. Then, mix in the peanut butter along with the eggs for added richness. Combine the two mixtures until they’re smooth and glossy.

After pressing most of the batter into the pan, you bake it until set before layering on the marshmallow fluff. Finally, dollop pieces of the reserved batter on top and give it a quick bake again. Once it cools, slice it into bars and enjoy the magic of this delightful dessert!

Ingredients

Gather these items to make the Fluffernutter Bars:

2 1/4 cups all-purpose flour
1 teaspoon baking powder
1/4 teaspoon salt
3/4 cup unsalted butter (softened)
3/4 cup brown sugar
1/3 cup white sugar
1 1/2 cups smooth peanut butter
1 large egg
1 large egg yolk
7 oz jar marshmallow fluff

If you need substitutions, you can use creamy almond butter instead of peanut butter for an alternative flavor, or even try a dairy-free butter option for a vegan version. Marshmallow cream can also be used interchangeably with marshmallow fluff.

Directions

  1. Preheat the oven to 350°F and place the oven rack in the middle of the oven.
  2. Line a 9×13 inch pan with parchment paper or aluminum foil and lightly grease.
  3. In a medium bowl, whisk together flour, baking powder, and salt.
  4. In a large bowl, beat the butter, brown sugar, and white sugar until fluffy.
  5. Beat in the peanut butter until well incorporated, then mix in the egg and egg yolk until smooth.
  6. Gradually mix the flour mixture into the peanut butter mixture until glossy.
  7. Remove about 1 cup of the batter and press the rest into the bottom of the pan.
  8. Bake for about 25 minutes until set.
  9. Spread marshmallow fluff evenly on top of the baked layer.
  10. Pinch off pieces of the reserved batter and place them on top of the marshmallow fluff without covering it completely.
  11. Bake for another 10 minutes until the top is set.
  12. Let cool for at least an hour before slicing.

Fluffernutter Bars

How to Serve Fluffernutter Bars

Fluffernutter Bars can be enjoyed warm or at room temperature. For an added twist, consider pairing them with a scoop of vanilla ice cream or drizzling chocolate sauce over the top. They’re also delightful with a side of fresh fruit for those looking to balance out the sweetness a bit. These bars are versatile enough for potlucks, kid’s parties, or just as a comforting after-dinner treat.

How to Store

To keep your Fluffernutter Bars fresh, store them in an airtight container at room temperature for up to five days. You can also refrigerate them to extend their shelf life to about a week. For longer storage, these bars freeze beautifully. Simply wrap them individually in plastic wrap and place them in a freezer-safe bag. They can be frozen for three months. When you’re ready to enjoy, thaw them in the fridge or at room temperature.

Tips to Make

Here are some helpful cooking tips for your Fluffernutter Bars. Make sure your butter is softened to room temperature for a creamy texture. If the marshmallow fluff is too sticky to spread easily, you can use a spatula dipped in warm water to help spread it smoothly. Feel free to adjust the ratio of peanut butter to marshmallow fluff if you prefer a more peanut buttery or fluffier taste. Also, cutting the bars while they are slightly warm may yield cleaner slices.

Variations

There are numerous ways to customize Fluffernutter Bars! Swap the smooth peanut butter for crunchy for extra texture. You can also infuse different flavors, like adding chocolate chips or drizzling melted chocolate on top. For a festive twist, sprinkle crushed graham crackers or mini marshmallows over the fluff before adding the batter on top. Seasonal variations like pumpkin spice can also lead to a unique autumn-inspired treat.

FAQs

What’s the best way to cut the bars?
Let the bars cool for at least an hour for cleaner cuts. A sharp knife will help create neat, even slices.

Can I make these bars gluten-free?
Yes, using a gluten-free flour blend can work, though the texture may vary slightly.

How do I know when the bars are done?
They should look set in the center and slightly golden around the edges. A toothpick inserted should come out clean.

Can I leave out the marshmallow fluff?
You can, but it won’t have that classic fluffernutter taste. Consider substituting with chocolate or caramel if you prefer.

For More Recipe Inspiration

If you enjoyed these Fluffernutter Bars, you might also love trying our Protein Muffins or explore our Smash Cake recipe for a fun twist on birthday treats!

Come visit us on Pinterest for more delightful baking ideas!
https://www.pinterest.com/quickcakes/

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Fluffernutter Bars

Fluffernutter Bars are a sweet, chewy treat made with peanut butter and topped with creamy marshmallow fluff, perfect for any occasion.
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 12 bars
Course: Dessert, Snack
Cuisine: American
Calories: 250

Ingredients
  

Dry Ingredients
  • 2 1/4 cups all-purpose flour
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
Wet Ingredients
  • 3/4 cup unsalted butter (softened)
  • 3/4 cup brown sugar
  • 1/3 cup white sugar
  • 1 1/2 cups smooth peanut butter Can substitute with creamy almond butter.
  • 1 large egg
  • 1 large egg yolk
Topping
  • 7 oz jar marshmallow fluff Can substitute with marshmallow cream.

Method
 

Preparation
  1. Preheat the oven to 350°F and place the oven rack in the middle of the oven.
  2. Line a 9x13 inch pan with parchment paper or aluminum foil and lightly grease.
  3. In a medium bowl, whisk together flour, baking powder, and salt.
  4. In a large bowl, beat the butter, brown sugar, and white sugar until fluffy.
  5. Beat in the peanut butter until well incorporated, then mix in the egg and egg yolk until smooth.
  6. Gradually mix the flour mixture into the peanut butter mixture until glossy.
Baking
  1. Remove about 1 cup of the batter and press the rest into the bottom of the pan.
  2. Bake for about 25 minutes until set.
  3. Spread marshmallow fluff evenly on top of the baked layer.
  4. Pinch off pieces of the reserved batter and place them on top of the marshmallow fluff without covering it completely.
  5. Bake for another 10 minutes until the top is set.
  6. Let cool for at least an hour before slicing.

Notes

Store Fluffernutter Bars in an airtight container at room temperature for up to five days. Refrigerate for about a week. For longer storage, freeze individually wrapped for up to three months.

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