The topping is really just Italian meringue with one key addition. Light corn syrup makes this ultra-marshmallowy. I wish I knew the science behind this but I came across this after some experimentation.
Can you put marshmallows in brownie mix?
YES! The soft gooey texture and sweetness of the marshmallow pairs wonderfully with the rich brownie. Add half a bag of mini marshmallows to the prepared batter or cover the brownie with them just before it’s finished backing.
what can you do With Marshmallows?
Whip up a batch of marshmallow fluff! If you’re in a hurry an easy hack for a similar taste is to pile some marshmallows on top of the brownie toward the end of baking and they’ll melt in the oven. You can also broil for a few minutes.
What Desserts Can you Make with Marshmallows?
Ultimate s’mores with homemade marshmallows
Hot chocolate marshmallow cookies
Pro tip, don’t add gelatine to your molten sugar! Feel free to experiment with flavoring the marshmallow topping and swirling extra ingredients in. This could have some peppermint for a holiday twist or a peanut butter syrup for some good old American zazz! ? Hope you enjoy!
Steps to Make This Marshmallow Brownie
How do you make Marshmallow Fluff Brownies?
- For the brownie; Preheat the oven to 350 degrees and prep a 9×13-inch baking pan with parchment paper. In a bowl, combine the eggs and sugar then mix them together. Sift the cocoa powder, flour, baking powder and salt to a bowl and give it a whisk.
- Combine the dry ingredients with the egg and sugar mixture. Toss in the chocolate chips and the melted butter. Add the batter to the prepped pan, smooth it out and bake for about 30 minutes.
- For the marshmallow; Beat the egg whites and 2/3 cup of sugar until it forms soft peaks. In a medium saucepan, add the remaining sugar, 2/3 cup of water and corn syrup, then place on low heat. Maintain at medium high heat and stir until the sugar melts and becomes clear. Heat until temperature reads 235-240F.
- Drizzle the sugar into the mixer (running on low) immediately once it is ready. Now run the mixer until the marshmallow is cool.
- For the Assembly; Once the brownie has cooled, pile the marshmallow fluff on and smooth it out using a spatula. Melt 1/3 cup of semi sweet chocolate and about 2 tablespoons of cream together.
- pipe the chocolate ganache all over the top and use a toothpick or a skewer to create a more marbleized pattern of swirls. Enjoy!
If you’ve tried this marshmallow brownie then don’t forget to rate the recipe and let me know how you got on in the comments below, I love hearing from you!
Marshmallow Brownie
Video
Ingredients
INGREDIENTS:
For the Marshmallow:
- 8 egg whites room temperature
- 1/2 cup water 120ml
- 2 2/3 cups sugar 550g, divided
- 1/4 cup light corn syrup 60mL
- 2 tsp vanilla extract 10mL
For the Brownie:
- 2 cups granulated sugar 400g
- 2 eggs
- 4 tablespoons cocoa powder 30g
- 1 cup flour 120g
- 1 teaspoon baking powder 4g
- 2 teaspoon salt 12g
- 2 cup dark chocolate chips 350g
- 1 cup melted butter 225g
For the Chocolate Swirls
- 2/3 cup semisweet chocolate 115g
- 4 tbsp heavy cream 60mL
- 1/4 tsp cream of tartar optional
Instructions
INSTRUCTIONS:
For the Brownie:
- Preheat the oven to 350 degrees F and prep a 9x13-inch baking pan with parchment paper.
- In a bowl, combine eggs and sugar. Mix together.
- Sift cocoa powder, flour, baking powder and salt into a separate bowl. Mix again.
- Combine with egg and sugar mixture.
- Toss in chocolate chips and melted butter.
- Add batter to pan and smooth.
- Bake for about 30 minutes.
For the Marshmallow:
- Beat the egg whites and 2/3 cup of sugar until soft peaks form. Add cream of tartar if using.
- In a medium saucepan add the remaining sugar, 2/3 cup water and corn syrup, then place on low heat.
- Stir until the sugar melts and becomes clear.
- Maintain at medium high heat until temperature reads 235-240F.
- Drizzle the sugar into the mixer immediately.
- Add vanilla and run mixer until marshmallow is cool/tepid.
For the Assembly:
- Melt 1/3 cup semi sweet chocolate and about 2 tablespoons of cream together. Set aside.
- Once the brownie has cooled, pile the marshmallow fluff on and smooth it out using a spatula.
- Pipe the chocolate ganache all over the top and use a toothpick or skewer to create a more marbleized pattern of swirls.
Notes
Nutrition
In the YouTube video, I used four eggs to make this brownie and it came out great, but I usually use two!
IF YOU LOVE THIS RECIPE TRY THESE OUT!
Kim says
How long can I leave finished dessert out after making. How should leftovers be stored. (If there are any!)
John K. says
Hi Kim,
If you don’t cut it and find a way to wrap it up really well, you can keep it at room temperature for 3-4 days.
Best,
John
Kim says
Thank you John! As I suspected would happen most went the night of my dinnner party and the remainder went to work with my husband the next day so storage was a non issue!! But good to know!
Janet says
These look amazing…definitely want to try…..but in the video you use 4 eggs!, but the directions say 2 eggs…..please clarify! Thanks!
Donna says
Hi there from Australia
Just wanted to tell you that everything I have baked so far has worked and is absolutely amazing!!!
Your xmas cakes and cookies where are hit OMG my familt and friends couldnt get enough of them!!!
Thank you again look forward to more ?
Donna
John K. says
Hey Donna,
That’s so nice to hear! What will you bake next!? 🙂
Best,
John
Emma Lee says
I’m going to make these marshmallow brownies and then marry them. Dream come true!
John K. says
Hey Emma,
I’m glad you like the brownies!
Best,
John
Deeys says
Hi John
Just curious would the recipe change if I wanted to add walnuts?
-Deeys
John K. says
Deeys,
Toasted walnuts will be great in the brownies! Fold them in at the very end when you mix up the batter! Hope you enjoy!
John
Linda says
Hi John,
I don’t know what size the pan is that you used, but I do know the difference between a rectangle and a square. Your pan is definitely a rectangle and the recipe calls for a 9 x 9 square pan. Could you clarify?
It looks really yummy. Thank you for the recipes.
John K. says
Linda,
If you want your brownies to be a bit taller and thicker, use a square pan! I used a 13×9 inch pan for the video! It’s up to you!
John
Cindy says
I made these tonight. I guess a couple clarifications you might want to add ? I assume that you don’t too the brownies with the marshmallow until it’s cooled and I’m wondering how long it talked for the marshmallow to set up? It made way more than I needed for the brownies so I put some in a separate pan to just make some marshmallows . It tastes delishous ! Can wait to test the combination ! I wound have rated higher but the directions are lacking.
Cindy
jkanell says
Hi Cindy, Thanks for that feedback! I’ll clarify the directions. I like this brownie with a mountain of marshmallow fluff on top but it is still very tasty with a thinner layer.
Best,
John
Katherine says
I always make my own marshmallows. They taste better than the packaged ones!
Ava says
So fluffy! Love these!
Lesley says
I️ will definitely have to try these! I’ve never heard of marshmallow brownies so I’m very intrigued… I’ll report back after we make them.