Mom’s Famous Marshmallow Brownies Recipe

Name: Mom's Famous Marshmallow Brownies Recipe
Prep time: 40 min
Cook time: 22 min
Total time: 62 min
Ingredients: 1 cup butter (softened to room temperature); 2 cups sugar; 1/3 cup cocoa powder; 4 eggs; 1 1/2 cups flour; 1 teaspoon salt; 2 teaspoons vanilla; 10 ounces miniature marshmallows; 1/2 cup butter (softened); 2 Tablespoons milk; 1 teaspoon vanilla; 4 Tablespoons cocoa powder; 3 cups powdered sugar

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55 Comments

5 from 3 votes

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These Famous Marshmallow Brownies are exactly what they are described as; FAMOUS. I guarantee these brownies will be one of the best brownies you will ever taste in this world. They are so creamy, chocolatey and delicious. You will love them.

If you have never tried our Mom’s Famous Marshmallow Brownies Recipe, you are going to love them. There is a reason they are famous!

They are perfectly chocolatey, with just the right amount of marshmallows and chocolate frosting.

However, we do think these brownies should come with a warning. If you make them for friends or family, they are going to continue to ask you to make them, and soon enough, you too, will be famous for these yummy brownies.

Our other popular sheet pan brownies are our Texas Sheet Cake Brownies – they are incredible and so easy.

Mom's Marshmallow Brownies cut into squares

I would definitely recommend making these a few hours before serving to allow the frosting to set up completely. We don’t recommend frosting them until they are cool, just so the frosting can fully set up, and not sink or melt into the brownies.

This frosting is best served on cooled brownies (or in this case, cooled marshmallows. The best part about these brownies, is that they make a lot! They are perfect for serving a crowd! You will love them!

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Could I use marshmallow cream instead, in Mom’s Marshmallow Brownies:

We have only used mini marshmallows when we make our Mom’s Marshmallow Brownies recipe. However, I am sure that marshmallow cream would work just as well, but we do recommend roasting them in the oven for a little bit, either way.

The texture of the marshmallows will be a little different, and they may not hold as well, but I am sure the flavor would still taste amazing. It may also take two cans of the marshmallow cream, to cover the brownies.

Watch how to make our Mom’s Famous Marshmallow Brownies, here:

Did you know we have a Youtube Channel? We have hundreds of simple and delicious recipes, your family is going to love. We take you through each recipe, step by step, and show you exactly how to make them.

These Chocolate Marshmallow Brownies are simple and delicious. Watch how to make them, here:

Looking for more brownie recipes? here are a few of our favorite:

Chocolate Cherry Chunk Brownies
Buttermilk Brownies with Peanut Butter Frosting
Lunch Lady Brownies
Chocolate Cream Cheese Brownies
Fudgy Avocado Brownies
Chocolate Turtle Brownies
Sheet Pan Fudgy Brownies

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Questions & Reviews

Camille says:

These are hands-down my favorite brownies of all time!!!!
Jenn says:

I love this type of brownie!! Yummy.
someonesgottapay says:

Those look delicious!

P.S. If you're looking for more delicious chocolate, check my blog, I have a couple chocolatey giveaways going on right now!

http://someonesgottapay.wordpress.com/category/giveaways/chocolate-giveaways/
Nur Diyanah Magness says:

wow so simple yet looks so goood! I am going to make it a point to try this soon.
Belinda Madsen says:

My brownies are similar but with a LOT more butter and instead of frosting over the marshmallows, FUDGE. Actually, I'm eating one now...
Cami says:

What chocolate frosting do you use? I have one, but don't love it.
Michael Ann says:

I've had these before! They were so good, and I don't have the recipe so thank you!!!
The Ellis' says:

Hey Cami!

I added the recipe my mom always uses for her chocolate frosting to the bottom of the post. She has never written down the recipe so after a little trial and error, we came up with that! I hope it works!
amy says:

What does "1 cube margarine" mean for the frosting? 1 stick? 1 tablespoon?
The Ellis' says:

Hey Amy!

It means one stick or a 1/2 c. Sorry about that! Thanks
Anonymous says:

Your recipes just look awesome. I'm overwhelmed with so many choices but I gotta start somewhere! Thanks for sharing all your great ideas!
Anonymous says:

My mom also made these while I was growing up. One of my fav recipes! This is also a fav for potlucks...as you said, it makes a ton and they're always a hit!
Jill says:

Have you ever used butter instead of margarine?
Amanda B. says:

Made them and loved them! Thanks!
Mary says:

How much is a cereal spoonful. A teaspoon? A tablespoon?
Laura Couto says:

How much would a cereal spoonful be?
Six Sisters says:

Sorry about that. I would go with a tablespoon!
Six Sisters says:

Sorry! A tablespoon would be best!
Six Sisters says:

Yes, works great!! :)
Amy says:

Has anyone used marshmallow creme instead of mini marshmallows? How did that work out?
Grandma Watson says:

these are just like I make only with my family they have to have chopped pecans in them, and lots of them. This is one of the best Blogs I have visited, so much great information.
mindy says:

Would you share this recipe?
Haley says:

ok, I just made these and they over flowed all over the bottom of my oven and that part burned and caused a huge mess - did this happen to anyone else??? The whole house was filled with smoke!
Cali says:

Sounds like your pan was too small. Did you use a cookie sheet?
dan and audrey says:

I am not a baker.... Made these and they were devoured!!! Although they did not look as pretty as yours, the taste is what counts right?!
Moe says:

Do you need to refrigerate leftovers because of the milk in the frosting?
Six Sisters says:

We usually just stick Saran wrap on them and stick them on the counter. I have never refrigerated them after I've made them :) thanks for your question!
Kelley Beam says:

Ummm...what kind of flour? SF or AP?
Melanie Hanni says:

If your going to make brownies use real butter not margarine, tastes so much better.
Renae says:

I'm having a hard time cutting them because the marshmallow layer is sticking to the knife. Any tips?
Cyd says:

Run your knife through hot water before slicing and that should help you get through the yummy marshmallow layer for a cleaner cut.
Annette says:

This is a marvelous recipe. They turned out perfect! Thanks for sharing your recipe Six Sisters’ Stuff!
Stephanie says:

Yum! What size baking sheet do you recommend?
Cyd says:

We use a cookie sheet measuring 10 x 15 x 1 inch.
Samantha Hoppie says:

Salted or unsalted butter?
Cyd says:

Either works great. We used salted.
Kelly Wolfe says:

Can you use any kind of butter like blue bonnet or country crock or does it have to be real butter .... For the frosting or brownies
Cyd says:

You could use blue bonnet or country crock. Just remember if the frosting is not thick enough, just add a little more powdered sugar to get the right consistency.
Tammy Gould says:

I was wondering do you use buttermilk or whole milk for frosting?
Cyd says:

We use whatever milk we have in our fridge. It's usually 1%.
Terrie says:

These are amazing and so simple to make, you must try
Mary says:

What size sheet pan do you use? These look delicious !
Cyd says:

It's a half sheet baking pan. They are about 13 x 18 inches. We love this pan - https://amzn.to/2C2jQI4
Kay says:

My mother had a similar recipe. We now refer to it as Exlax Brownies. When my brother (there are also 4 sisters) was in college, I made him a batch of these (his favorite)...and I put Exlax in the frosting. He was such a brankster...so he truly deserved this! Unfortunately (for him!) he only shared with 2 other buddies. Next time he came home, he came up to me with what was left (all of TWO brownies) and tried to make me eat it. It's been a family joke ever since. I was very proud to actually pull over a good prank on my brother!
Gaylene Fusselman says:

This i my favorite brownie recipe!!
Momma Cyd says:

Thanks Gaylene. So glad you like them!!
Krista says:

I want to try these but I don’t have a half sheet pan. Is there anything else I can use that’s similar in size?
Momma Cyd says:

Just a regular size cookie sheet is perfect for these brownies.
Nina says:

This is one of my favorites from Six Sisters! I lent my cookbook of yours out and needed to make this recipe so I checked here on your website. I noticed this recipes uses a 18x13 size pan. I would be afraid of having thin brownies that were overcooked. Your recipe book calls for a 10x15" pan. I've always used this size and the brownies are plenty thin in this size baking sheet. Just FYI.
Momma Cyd says:

We just use a cookie sheet that we have on hand, they can vary slightly.
Paisley Z. says:

I have been trying to recreate the yummy marshmallow brownies my great Aunt Eithel brought to every family picnic and reunion when I was growing up. This is it!!! Thank you thank you for posting this, they are as delicious as I remembered them and brought back wonderful memories of family that have long since passed on.
Penny McLaughlin says:

wondered if these could be frozen?
Momma Cyd says:

Yes, you can easily freeze them in an airtight freezer container.
Jodi says:

I read you can do this for a 9x13 pan but do not see the measurements. Where could I get that? Thanks
Bobbi @ Six Sisters says:

When I want to make brownies in a 9 x 13 inch pan, we ususally opt for our Fudgy Brownie recipe. Then we still follow the steps with the marshmallows. After the brownies are done cooking, cover the top with mini marshmallows and stick back in the oven for about 3 more minutes. Let cool and frost. They are amazing and super fudgy and a little thicker. https://www.sixsistersstuff.com/2012/11/fudgy-brownies-recipe.html