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Gooey Marshmallow Brownies

By Brianna Simmons ยท Published: September 19, 2023 ยท Updated: September 26, 2025

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Fudgey, rich and chocolatey few things are better than a homemade brownie. One of my favorite desserts these brownies get leveled up with a thick swirl of marshmallow cream. Making brownies from scratch is easier than you think and your efforts will certainly be rewarded. My recipe for Gooey Marshmallow Brownies is fairly simple and absolutely irresitable.

Gooey Marshmallow Brownies

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When it comes to brownies I am definitely team gooey and fudgey brownies all the way. Instead of using cocoa powder (which I find leads to a cakey texture) these brownies start with a mix of semisweet chocolate and butter melted together. This then gets added to a mix of sugar and eggs that have been creamed together then finally stirred together with some all purpose flour. For slightly more effort than using a boxed mix you’ve got a fudgey, chocolately brownie that tastes like it came straight from the bakery. This is my standard go-to brownie recipe (also used in my Baileys Cheesecake Brownies) but is extra delicious swirled with a thick layer of homemade marshmallow fluff (you can also you storebought if you’d like).

Ingredients for Marshmallow Brownies

  • bittersweet chocolate chips
  • unsalted butter
  • large eggs
  • sugar
  • vanilla extract
  • all purpose flour
  • kosher salt
  • marshmallow fluff
Gooey Marshmallow Brownies

How to Make Marshmallow Brownies

Making brownies from scratch is easier than you may think. Preheat oven to 350 degrees. In a double boiler (a metal bowl set over a pan with boing water) melt chocolate and butter stirring until well mixed. Beat together the sugar and eggs with an electric hand mixer using medium-high speed in a large bowl until smooth and creamy, this will take about 3 minutes. Mix in melted chocolate, vanilla, flour and salt using the electric hand mixer on low speed until combined. A few lumps in your batter are fine.

Gooey Marshmallow Brownies

Line an 8ร—8 in baking pan with parchment paper . Pour about 2/3s of the brownie mixture into the pan, smoothing it out into an even layer. Spread the marshmallow fluff over this and then top with the remaining brownie batter. Use a butterknife to create a swirl pattern. Bake the brownies for 35 minutes. Take the pan out of the oven and allow to fully cool in the baking pan on a rack. Remove brownies from the pan using the parchment paper and cut into 16 squares.

Gooey Marshmallow Brownies

If you like these Gooey Marshmallow Brownies be sure to take a look at some of my other recipes!

Espresso Chocolate Chip Cookies

Matcha White Chocolate Chip Cookies

Strawberry Blondies

Chocolate Chip Biscotti

Homemade Chocolate Sauce

Gooey Marshmallow Brownies Pinterest Image

If you make these Gooey Marshmallow Brownies please be sure to leave a comment and/or give this recipe a rating! Be sure to follow me on Youtube, Facebook and Pinterest for my latest recipes. Also, if you do make this recipe please tag me on Instagram, Iโ€™d love to see what you guys are making!

Gooey Marshmallow Brownies

Gooey Marshmallow Brownies

Take your brownies to the next level with these decadent , easy to make Gooey Marshmallow Brownies. Discover the best recipe for homemade Marshmallow Brownies with marshmallow fluff.
5 from 41 votes
Print Recipe Pin Recipe
Prep Time 10 minutes mins
Cook Time 35 minutes mins
Total Time 45 minutes mins
Course Dessert
Cuisine American
Servings 16

Equipment

  • 1 Hand Mixer
  • 1 8×8 in baking pan

Ingredients
  

  • 1 cup bittersweet chocolate chips
  • 1/2 cup unsalted butter
  • 3 large eggs
  • 1 cup sugar
  • 1/2 tsp vanilla extract
  • 1/2 cup all purpose flour
  • 1/4 tsp kosher salt
  • 1 cup marshmallow fluff

Instructions
 

  • Preheat oven to 350 degrees. In a double boiler melt chocolate and butter stirring until well mixed.
  • Beat together sugar and eggs with an electric hand mixer using medium-high speed in a large bowl until smooth and creamy, about 3 minutes. Mix in melted chocolate, vanilla, flour and salt using the electric hand mixer low speed on low speed until combined. A few lumps are fine.
  • Line an 8ร—8 in baking pan with parchment paper or spray with cooking spray. Pour about 2/3s of the brownie mixture into the pan, smoothing it out into an even layer. Spread the marshmallow fluff over this and then top with the remaining brownie batter.ย Use a butterknife to create a swirl pattern.
  • Bake the brownies for 35 minutes. Remove from the oven and allow to fully cool in the baking pan on a rack. Remove brownies from the pan and cut into 16 squares.
Keyword chocolate dessert, chocolate recipe, easy dessert recipe

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Comments

  1. Jamie says

    October 2, 2023 at 4:31 pm

    5 stars
    I tried this before and it was amazing! Itโ€™s fluffy and delicious! I would love to make more!

    Reply
  2. Amy Liu Dong says

    October 2, 2023 at 5:43 pm

    5 stars
    Oh my gosh, these are so delicious, chewy, and delicious. I am so excited to make this for the kids

    Reply

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