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Decadent Fluffy Marshmallow Swirl Brownies Recipe

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Decadent Fluffy Marshmallow Swirl Brownies Recipe

For me, brownies are an emotion! And I am pretty sure they are for almost everyone reading this right now!
Feeling a bit low? Why not have a brownie?

Feel like celebrating? Let’s do it with some brownies! And to make it an even more delightful dessert, I have come up with my favorite version of brownies – Decadent Marshmallow Fluff Swirl Brownies.

It’s the perfect pair of decadent brownie with gooey marshmallow fluff. I bet it will be hard to resist!

Brownies are one of the most versatile desserts. You can pair it up with almost anything, and it will never fail to impress you.

And for this recipe, I have paired up my brownies with marshmallow fluff.

Marshmallow fluff is one of the most loved confections in America. And if I remember correctly, it was first mentioned in an American cookbook in 1869, but the recipe wasn’t disclosed then. This confection first hit the markets in 1979 and has since been one of the most loved confections.

Moving forward, you’ll learn the perfect gooey and glossy marshmallow fluff and one of the best chocolatey brownies.

This recipe will be one of your favorite desserts to relish with a cup of coffee, making it a perfect evening!

Marshmallow Fluff Swirl Brownies Video Tutorial

Why You’ll Love This Recipe

  • Easy-to-make Marshmallow fluff: Now, when I say it’s easy to make, it is. Even while going through the ingredients and method, you’ll feel so, and when you make it, you won’t believe how easily you could make the marshmallow fluff at home, that too way better than the store-bought. I have just used six no-fancy – readily available ingredients for the fluff. You can even use it as a filling in your cakes.
  • Decadent egg-free brownie base: If you look at the ingredients, you’ll see that I haven’t used any eggs for the brownie, and still, it is one of the best brownies you’ll ever have. 
  • Customizable recipe: This recipe is such that you can easily substitute the marshmallow fluff with other flavors, e.g., with Biscoff spread, and enjoy an egg-free Biscoff brownie. 
  • The mouthfeel: Once you bite into these freshly out-of-the-oven warm brownies with your coffee, it will undoubtedly become your go-to dessert. It just feels so good.

Important Ingredients In Marshmallow Fluff Swirl Brownies

  • Egg whites: The marshmallow fluff gets a cloudy, light texture from the nicely whipped egg whites.
  • Lemon juice: It is an essential ingredient as it will help stabilize the meringue. 
  • Sugar syrup: For the marshmallow fluff, you’ll make sugar syrup using water, castor sugar, and corn syrup. This mixture will help get a glossy and fluffy texture.
  • Castor sugar & brown sugar: I have used a combination of these two sugars for this recipe. It will give a fudgy indulgent texture to the brownie.
  • Melted butter, curd, condensed milk, and milk: These ingredients add moisture and fat to the recipe giving it a perfect gooey texture. I have store-bought curd for the recipe. You can also use homemade, but make sure it is thick and not too sour. 

How To Make Marshmallow Fluff Swirl Brownies 

  • Make the sugar syrup: Put water, castor sugar, and corn syrup in a heavy-bottom saucepan. Bring this mixture to a boil till it reaches 115°C. Meanwhile, we’ll beat the egg whites.
  • Whip the egg whites: In a bowl, take egg whites and lemon juice together and beat the mixture until you get fluffy egg whites.
  • Add syrup to the meringue: Once the syrup reaches the desired temperature, gradually add it to the whipped egg whites and continue beating. Make sure to add only a little syrup at a time.
  • Add vanilla essence: Now add vanilla essence to the fluff and mix it nicely. Our marshmallow fluff is now ready. 
  • Melt butter and both the sugars: For the brownie, put the butter and both castor and brown sugars in a bowl and melt in the microwave. 
  • Add curd & condensed milk:  Now add curd and condensed milk to the melted butter mixture and give it a good mix.
  • Sift in the dry ingredients: It’s time to sift in all the remaining dry ingredients, i.e., all-purpose flour, natural cocoa powder, salt, and baking powder. Mix these until you get a thick batter.
  • Add in the milk: To make the thick batter a bit smooth and flowy, add in the milk and give it a good stir.
  • Add chopped chocolate: Lastly, add chopped dark couverture chocolate to the batter and give it a good mix.
  • Pour the batter and pipe marshmallow fluff: We’ll now pour the batter into a greased and lined square ring. Then pipe marshmallow fluff blobs onto the batter and make swirls using a toothpick.
  • Bake: Bake it in a preheated oven at 180°C (OTG MODE: lower rod only) for 25 – 30 minutes or until a toothpick inserted in the center comes out clean.

Our decadent marshmallow fluff swirl brownies are now ready! Serve them warm with a cup of coffee, and enjoy!

Chef Tips For The Recipe

Use a kitchen thermometer.

The sugar syrup must be at a specific temperature to get the fluffy, glossy marshmallow fluff. So, using a kitchen thermometer to track the temperature is a must.

Add the sugar syrup gradually.

While adding sugar syrup to the whipped egg whites, make sure not to add it at once, as it will deflate the fluff.

Line the tin correctly.

This step is also essential, as it will help you to remove the brownie from the ring easily. Otherwise, it will be a task!

Look out for the bake time!

Overbaked brownies are a big no! The longer you bake it, the more cakey and dry it gets. Bake the brownies until just a few moist crumbs stick to the toothpick, and you should be fine.

How To Store Marshmallow Fluff Swirl Brownies 

Cling wrap these brownies and store them in an air-tight container at room temperature or in the refrigerator. It should stay good for 3 – 4 days at room temperature and 5 – 6 days in the fridge.
Just make sure to warm them up a bit before serving!

More Easy Recipes

If you love this recipe, try our Edible Brownie BatterBest Eggless Mocha Recipe, and Delicious Choco Lava Cake.

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Decadent Marshmallow Fluff Swirl Brownies

With this recipe, I bring you the perfect pair of a decadent brownie base with gooey marshmallow fluff. I bet it will be hard to resist!

  • Total Time: 50 to 60 minutes

Ingredients

Scale

Marshmallow Fluff

  • 40 g Water
  • 70 g Castor sugar
  • 125 g Corn syrup
  • 1.5 Egg whites (complete white of one egg and half white from the other egg)
  • 2 g Lemon juice
  • 1 tsp Vanilla essence

Brownie

  • 80 g Salted butter
  • 30 g Castor sugar
  • 20 g Brown sugar
  • 40 g Curd
  • 40 g Condensed milk
  • 60 g All-purpose flour
  • 25 g Natural cocoa powder
  • 1/8 tsp Baking powder
  • A pinch of salt
  • 60 g Milk
  • 50 g Chopped dark couverture

Instructions

For Marshmallow Fluff

  1. Put water, castor sugar, and corn syrup in a heavy-bottom saucepan. Bring this mixture to a boil till it reaches 115°C. Use a kitchen thermometer to track the temperature. Meanwhile, we’ll beat the egg whites.
  2. Add egg whites and lemon juice together in a bowl and beat the mixture until you get fluffy egg whites.
  3. Once the syrup reaches the desired temperature, add it to the whipped egg whites gradually and continue beating. Make sure to add only a little syrup at a time.
  4. Now add vanilla essence to the fluff and give it a nice mix. Our marshmallow fluff is now ready. 

For Brownie

  1. Put the butter, castor, and brown sugar in a bowl for the brownie and melt in the microwave. 
  2. Now add curd and condensed milk to the melted butter mixture and mix it well.
  3. It’s time to sift in all the remaining dry ingredients, i.e., all-purpose flour, natural cocoa powder, salt, and baking powder. Mix these until you get a thick batter.
  4. To make the thick batter a bit smooth and flowy, add the milk and stir it well.
  5. Lastly, add chopped dark couverture chocolate to the batter, giving it a good mix.
  6. We’ll now pour the batter into a greased, lined square ring. Then pipe marshmallow fluff blobs onto the batter and make swirls using a toothpick.
  7. Bake it in a preheated oven at 180°C (OTG MODE: lower rod only) for 25 – 30 minutes or until a toothpick inserted in the center comes out clean.

Our decadent marshmallow fluff swirl brownies are now ready! Serve them warm with a cup of coffee, and enjoy!

  • Author: Chef Meenal
  • Prep Time: 25 to 30 minutes
  • Cook Time: 25 to 30 minutes

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