Chocolate Marshmallow Brownie Cookies Recipe

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3.75 from 4 votes
Published: August 12, 2021Author: Camille Beckstrand
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These Chocolate Marshmallow Brownie Cookies are easy to make and full of chocolatey flavor. They come together quickly and taste absolutely delicious.
Chocolate Marshmallow Brownie Cookies Recipe

What’s better then a Chocolate Marshmallow Brownie Cookies?!

These cookies are so rich and chocolatey . . . and because they are made with a cake mix, they are so easy to make!

Do these cookies freeze well?

These recipes freeze great.

We recommend putting them in an airtight storage container, or a thick ziplock bag, with all the air sucked out of it.

We recommend only freezing them for a month at the longest. To thaw them, we recommend placing them in the fridge or on the counter, 24 hours before serving.

We wouldn’t recommend microwaving them because it will ruin the texture of the frosting and marshmallows.

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frosted chocolate brownie cookies with marshmallows

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Serves: 48

Chocolate Marshmallow Brownie Cookies Recipe

3.75 from 4 votes
These Chocolate Marshmallow Brownie Cookies are easy to make and full of chocolatey flavor. They come together quickly and taste absolutely delicious.
Prep Time 10 mins
Cook Time 9 mins
Total Time 19 mins
Print Pin

Ingredients

  • 15.25 ounces cake mix milk chocolate
  • 2 eggs
  • ⅓ cup vegetable oil
  • 10 ounces miniature marshmallows

Frosting

  • ½ cup butter softened
  • 2 Tablespoons milk
  • 1 teaspoon vanilla
  • 2 Tablespoons cocoa
  • 3 cups powdered sugar

Instructions

Cookies

  • Mix all ingredients together. Roll into 1 ½ inch balls. Place on cookie sheet and bake at 350 degrees for 5-6 minutes.
  • Pull the cookie sheet out of the oven and place 6-7 mini marshmallows on each cookie. Put the cookie sheet back into the oven for 2-2 ½ minutes (no longer!)
  • The marshmallows will puff up as shown in the picture.
  • Let the cookies cool on the cookie sheet for a couple of minutes, then remove to wire rack to cool.
  • Once they are cooled completely, put frosting on top.

Frosting

  • Combine all frosting ingredients with hand mixer. If too thick add a little more milk. If not thick enough, add a little more powdered sugar. Frost tops of cooled cookies.

Notes

  • These cookies freeze great. We recommend putting them in an airtight storage container, or a thick ziplock bag, with all the air sucked out of it.

Nutrition

Calories: 120 kcal · Carbohydrates: 19 g · Protein: 1 g · Fat: 5 g · Saturated Fat: 3 g · Trans Fat: 1 g · Cholesterol: 12 mg · Sodium: 99 mg · Potassium: 37 mg · Fiber: 1 g · Sugar: 14 g · Vitamin A: 70 IU · Calcium: 16 mg · Iron: 1 mg

Equipment

  • Mixing Bowl
  • Baking Sheet

Recipe Details

Course: Dessert
Cuisine: American

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  1. Just Jaime says:
    May 28, 2011
    These look tasty! How cool you can just make your own recipe!
    Reply
  2. Kylee says:
    May 28, 2011
    Those look delish, Cam! Keep the recipes coming! ;)
    Reply
  3. Michele says:
    May 28, 2011
    oh my goodness, i love cutlers! i no longer live by it though. i am so happy you came up with this recipe b/c it was always my favorite cookie there. so yummy!
    Made By Meech
    Reply
  4. The Iowa Farmer's Wife says:
    June 2, 2011
    Holy cow these look amazing!!!!
    Reply
  5. idesign says:
    June 2, 2011
    wow!
    Reply
  6. Tanya @ Greetings From the Asylum says:
    June 3, 2011
    I was going to leave you a nice comment, but now I don't have time. Now I need to run straight to my kitchen and turn on the oven so I can make these cookies. I hope you understand why I can't say thank you for giving me this recipe, and why I can't even finish this comm... ;)
    Reply
  7. Katie says:
    December 24, 2011
    How much is a "cube of butter?"
    Reply
    • Courtney Sprague says:
      September 1, 2020
      I just finished frosting these delicious cookies and felt compelled to comment. They are very easy to make using the cake mix and they came out so soft! We have a Cookie Connection in town and these taste just as good - now I have to find people to share them with or I'll eat the whole batch!
      Reply
  8. Plain Jame says:
    February 8, 2012
    @Katie - people here in Utah where I live always say a "cube" which really means a square, but they mean a stick - which is a half cup. :)
    Reply
  9. Rebekah says:
    March 26, 2012
    How much is a cereal spoonful? Is that the same as a teaspoon?
    Reply
  10. way2muchtodo says:
    August 24, 2012
    Same question about the "cube" of butter"! Should this be a cup?? If not, how big is a cube??
    Reply
    • Camille says:
      August 24, 2012
      Ha ha! Sorry about that! I learned that a cube of butter is a Utah thing . . . anyone, it's just a stick of butter (or 1/2 cup). :)
      Reply
  11. I got the Joy says:
    December 6, 2012
    These are so good. Remind me of my childhood. I could not find a milk chocolate cake mix so I just added some powdered milk to the mix. To die for!
    Reply
  12. browneyedgirl says:
    December 10, 2012
    what quantity does this recipe make? I'll be making them for a cookie exchange and need to make 3 dozen.
    Reply
    • Six Sisters says:
      December 11, 2012
      You will get right around 3 dozen. Try to keep your dough balls close to 1 inch and you should be fine.
      Reply
  13. Food Marriage says:
    January 5, 2013
    My friend just made these for a cookie exchange I hosted before Christmas. She shared her source with me from Pinterest, which then linked back to your post here. The Marshmallow Chocolate Marshmallow Brownie Cookies were voted the best cookies of the night!! I shared the recipe on my blog and made sure to link to give credit to you for the creation of this great recipe!! Love your blog! ---BA from FoodMarriage.com
    Reply
  14. Mumma yumma says:
    October 17, 2013
    Do these freeze well? I'd like to make them for a cookie exchange and am wondering whether I can get a jump on them?
    Reply
    • Cyd says:
      October 21, 2013
      They freeze great. Just have them in an airtight container or a thick freezer bag.
      Reply
  15. Jennifer says:
    December 17, 2013
    I love trying new recipes! I too thought these looked wonderful and thought they would be great to make for my work cookie exchange. They sounded really easy to make and since I was going to have to make almost a 100 cookies, I thought these would be perfect. However, after the first batch I quickly changed my mind. One of most frustrating thing was "rolling" them into balls. The cake mix/eggs/veg oil created a very sticky taffy like mixture. Trying to "roll" them into balls was absolutely impossible! You can't even get the batter off your fingers. Cooking the cookies for only 5-6 minutes was no way close to long enough time before putting the marshmallows on, they were still very doughy. The marshmallow piece wasn't that big of a deal, but I found myself having to smash the cookies down inorder to get them to stay on top. Also, the frosting was terrible. I tried making the frosting a few different ways by decreasing/increasing vanilla and even powder sugar. I would have been better off using store bought frosting. Of all the recipes I've ever tried, I have never before written a comment, but I was so disappointed and frustrated with my experience that I felt I needed to share. If you're going to make these yourself, be prepared to spend more total time to create them and if you have a favorite frosting recipe I would recommend using it instead.
    Reply
    • Cari says:
      September 2, 2018
      I had the same problem with the batter - I'm curious if it's the brand of cake mix. But I simply scooped the batter out with a spoon, and then scraped it off onto the baking sheet with another spoon - and that worked just fine. I'm going to try these again with a different brand and see if that makes any difference.
      Reply
  16. Amber says:
    December 23, 2013
    These are my familes favorite cookies! We have a similar cookie shop called The Cookie Connection, they make a similar version of these and they are delicious! I found your recipe and was thrilled to be able to make this yummy cookie at home. I followed your recipe exactly and they turned out perfect! I never had any problems rolling the dough into balls, the marshmallows can be tricky but that is not a big deal. And this icing is one I have used for years as a basic frosting. This is such a simple recipe, I really don't see how anyone can have problems with it.
    Reply
  17. Darlene says:
    December 1, 2014
    How many can I expect this recipe to make?
    Reply
    • Cyd says:
      December 1, 2014
      It should make around 3 dozen cookies.
      Reply
  18. Kristen says:
    December 24, 2016
    Just made these and they were a HUGE hit!! My question is that my frosting was too thin, I made it as per recipe directions but still never really set up..... any suggestions? It was wonderful tasting and we still used it, but could have been thicker? More stiff?
    Reply
    • Cyd says:
      December 26, 2016
      Hi Kristen. You could add a little more powdered sugar to the frosting if it's too runny. We updated the recipe slightly, so hopefully that will help.
      Reply
  19. Stacie says:
    November 23, 2020
    Can I substitute butter for margarine?
    Reply
    • Camille Beckstrand says:
      November 25, 2020
      That will work great!
      Reply
    • Momma Cyd says:
      November 25, 2020
      Yes, butter will work too.
      Reply
  20. Ann Marie says:
    August 18, 2021
    Do you have a brand of cake mix you recommend? Also, from the instructions, do you add mini marshmallows to the batter as well as put on top? It lists them as an ingredient and says to mix them so wanted to double check. Thanks
    Reply
    • Momma Cyd says:
      August 23, 2021
      If you scroll down to the recipe card and read #2 in the instructions it will explain when you add the mini marshmallows to the top of the partially cooked cookies. Any brand of cake mix will work fine. We usually buy a name brand.
      Reply
  21. Sara Minor says:
    August 19, 2021
    There is no portion direction that I could find so I made 12 cookies out of what appears should have been 24?? not sure but my cookies were undercooked and HUGE

    3 stars

    Reply
    • Momma Cyd says:
      August 23, 2021
      In #1 of the instructions in the recipe card it says to roll the dough into 1 1/2 inch balls. It should make about 48 cookies. So I think they were undercooked because they were too big.
      Reply
  22. HD says:
    September 12, 2021
    We loved this recipe. It has become a family favorite! So easy and delicious!

    5 stars

    Reply
  23. Erin Mitchell says:
    September 12, 2021
    These were so good!! I think my cookies were too big, because I had to throw them back in the oven, and I only got 20. So next time I’ll make them smaller and it’ll be perfect! Also, do you leave the marshmallows formed, or do you squish them down at all? Thank you for the deliciousness!!

    4 stars

    Reply
    • Momma Cyd says:
      September 14, 2021
      The marshmallows can be a little tricky. You kind of balance them on each cookie and then stick them back into the oven to melt a little. Just put on enough to cover the top of the cookie. When they start to melt they stick to the cookie. So taking them out of the oven is much easier!
      Reply
  24. Kinsey says:
    September 14, 2021
    So I ended up with only 21 cookies and they are really small. Also I had to smush the marshmallows down into the cookie. Is that right? They are still kind of falling off. I could use some more directions

    3 stars

    Reply
    • Momma Cyd says:
      September 14, 2021
      When you place the marshmallows on the cookie and place back in the oven, they are sitting on top of the cookie kind of balancing on top. When they heat up they will melt and stick to the cookie. Hope this helps.
      Reply
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