Marshmallow Frosted Brownies aka Mississippi Mud Brownies

Mississippi Mud Brownies are ooey-gooey chewy brownies topped with marshmallows and a homemade chocolate fudge icing. 
This is the 3rd time I have made these delicious Marshmallow Frosted Brownies.  I initially made them for a Super Bowl party, and now I cannot stop making them. I posted about these brownies in late January, on "Blogs and Recipes Worth Mentioning".

I did not go into a whole lot of details about this recipe, so I wanted to make sure this recipe didn't buried in all my posts. Today I'm making a separate post just for these wonderful brownies because they really do deserve it.

They were a huge hit at the super bowl party and the whole pan was cleaned out by the end of the night. I actually had to make a second batch the following day, because my husband never did get a brownie.

I love the marshmallow filling and the warm chocolaty icing on top. I think the homemade icing takes these brownies over the top. This recipe uses a boxed brownie mix, so it doesn't get any simpler than that. If you haven't made these brownies you don't know what you're missing.


Mix the brownie mix according to the box directions for cake like brownies. 

Bake and remove from oven. 

Cover the baked brownies with the mini marshmallows and put back into the oven for a few minutes.  

It only takes a couple minutes for the marshmallows to puff up. One they look puffy remove from the oven and set aside to cool; 

While the brownies are cooling prepare the chocolate icing. In a medium size pot over medium-high heat add the butter, cocoa, water and milk. Bring the mixture to a boil over medium-high heat. Mix together using a wire whisk. Remove from heat and while still hot add the confectioners' sugar, and vanilla. Mix well to blend everything together. 

Continue to whisk until the frosting starts to thicken. 

If you're like me you don't have much patience, so I fill a large bowl with ice water and place the pot with the icing inside the bowl and whisk the icing so it thickens faster. You don't want it really thick or cold. Just mix until it starts to thicken a bit , but is still pourable consistency and warm.


Pour frosting evenly over the marshmallows while frosting is still warm . Allow to cool before cutting.






Adapted from: Real Mom Kitchen


33 comments

Meg said…
This is such an amazing recipe!
Emily said…
These look sooo good!!!! I tried making brownies last night and was dissappointed when I cut them and they turned into mush =[ I will definitely be making these soon!
#1SAHM said…
these look amazing! Marshmallows and chocolate...my two favs combined! Yum!
Nonnas News said…
oh those looks wonderful! I will print this out and give them a try.
Beth said…
My grandmother used to make something eerily similar, but she called it Mississippi Mud Cake. Delicious no matter what you call it!
Live.Love.Eat said…
These look amazing Mommy!!!!!
Monica said…
I am so happy I found your blog! I have been reading it for about 30 minutes now. I can't stop. LOL. You have some great recipes. I can't wait to try your cake mix dinner rolls.
YaYa's Funhouse said…
yes, this recipe is like Mississippi Mud Cake except it had chopped pecans. It is SO GOOD!!
Anonymous said…
Very cool site! Keep updating!!
MrsDesmarais said…
I made these after you first mentioned them! THEY ROCK! Can't go wrong with marshmellows and chocolate. But I do agree with you, the frosting it awesome. Can't wait to make your Nacho Pie later this week. :)
Amber said…
wow! those look awesome! ill be trying them myself!
Ingrid_3Bs said…
Thanks (I think)for reminding me that I haven't made these yet! LOL! Yum, I soooo love marshmallow filled desserts!

I'll let you know how it goes!

Btw, hope your family starts to fill better!
~ingrid
Evan and Nicole said…
Made this!! It was very good!!
Laura said…
I'm so glad you are enjoying these. They are my hubby's fav next to Texas Sheet Cake. It's great to take somewhere too, people would never guess how easy they are to whip up.
Tina Butler said…
Hi Laura, I am with your husband on the Texas Sheet Cake umm there is something about it that I just love. I cant stop making these brownies I am so addicted. Ü
Anonymous said…
I usually baked brownies at home. I'd like to try this marshmallows on top. Looks really yummy! Thanks for sharing the recipe...
justjoycee said…
These brownies look sooo good, omg....mouth watering. Just found your blog and became a follower....
Joyce
Anonymous said…
Thanks for this recipe. I have a ton of marshmallows left over from making the bathtub cake, so this will be great. Thanks!
Missy said…
These brownies were awesome!! Thanks so much for your website and recipes!!
Rebecca said…
This is definitely on my 'must try' list!

Have you tried them with homemade marshmallows? I can't wait. This sounds like it would an excellent thing to bring to a family potluck during all the coming holidays.
Once you try brownies like this you won't eat them any other way!!! I have made brownies like this for years, we call it heavenly hash brownies after the candy by Elmers candy co. They are the best!!!
jan :0) janmariedollsandprims.blogspot.com
Sorry about the picture thing. I usually do put a comment on who took the picture if it's not my own but must have forgotten. Anyway, love your site and your recipes.
hallie said…
So I just made this recipe and it looks delicious (still cooling!). However, I messed up b/c I didn't realize you had to completely cool the brownies w/ marshmallows BEFORE frosting. We will see how it turns out--my frosting and marshmallows are kind of a jumbled mess--not the prettiest dessert I've made but will hopefully still taste yummy! I will have to try again w/ the proper cooling instructions.
kimnkell said…
Hi Tina,
Do you have a good made from scratch chewy style brownie? If so would you share it as I have been looking for a good homemade chewy style brownie for a long time.
Thanks
Kim
Lauren P said…
I just made these!

Without the frosting though, I heated nutella and poured it over the top like a thick drizzle instead.

Realized afterwards it would have been great with cocoa almonds chopped over the top. But I had it over vanilla ice cream... Such a treat!
Anonymous said…
These taste amazing!! I made these last weekend for my son to take to two teen youth events. For the first event, I cut the brownies into two inch squares and arranged them on a platter. Unfortunately, they did not go over well and 90% came back home. For the event the next day, with some of the same kids attending, I cut the 2 inch squares into 4 smaller pieces, placed the pieces into mini cupcake liners, and they ate every last one. My son declared them a huge hit! Thank you for sharing this deliciously decadent treat.
Debbie said…
This is a great recipe. I love making this recipe. It is easy and delicious. I made a batch and cut them into little squares for our Easter gathering. Not a single one left on the plate in fact some people had several on their plate... Just made them again today. I add walnuts to my brownies since this is a very sweet dish.
Elizabeth C. said…
I made these today. Very easy to make and very yummy and look very impressive.
MrsRoche said…
Just curious - is making the brownies with the "cake" texture essential to the recipe or just a personal preference? Thanks for sharing a great sounding recipe.
Con Delight said…
Wow looks so good!
Melissa said…
Does it call for 3 & 1/2 cups confectioners sugar or 3, 1/2 cups? I'm making this today & I'm going to go with the 3, 1/2 cups. Hope that's right
Heather said…
Can't wait to try these. The birthday girl requested, so thanks for helping out!
Unknown said…
When my kids were young, I used to make these just to bribe babysitters. Worked every time!