No one can resist these scrumptious Thin Mint Brownies. Rich, fudgy brownies are spread with lightly minted marshmallow creme, then sprinkled with crushed Thin Mints. What’s that you say? Over the top? I can’t hear you.

Thin Mint Marshmallow Brownies from The Food Charlatan

Sometimes we get together with Eric’s out-of-state siblings (on a Google hangout) and play board games. We were playing Scattergories the other day when I caught Eric writing something down after the buzzer had gone off. “CHEATER!!!!” I yelled as loud as I could and we all started verbally abusing him.

He looked at me with puppy dog eyes and earnestly said in an undertone, “I was writing you a note Karen…”

Well then my heart melted and my eyes went starry and I said “Really?” I fully repented. What a sweet husband.

Thin Mint Marshmallow Brownies from The Food Charlatan

I was about to tell you all about it, because everybody loves a sappy story now and then. (No? Just me?) So I asked him a few minutes ago what he was writing me.

“Oh. Totally cheating. I can’t believe you guys bought that.”

(Cue punching.) Never again. My heart is now encased in ice. Watch out, Eric. The board game police are gonna HUNT YOU DOWN.

Thin Mint Marshmallow Brownies from The Food Charlatan

How to make Thin Mint Brownies

But back to the sappy love story. Let’s talk about these brownies. (If these aren’t a sappy love story, then I don’t know what is.) My favorite recipe for rich, fudgy brownies (made with brown butter…yes, the obsession continues) smothered with marshmallow and mint cookies. You could use a box mix if you want. I’m no judge.

Thin Mint Marshmallow Brownies from The Food Charlatan

The marshmallow creme only has a few drops of peppermint in it. Like maaaaybe an 1/8 teaspoon. I have this terrible habit of adding too much peppermint to desserts and ruining them. When I made this the first time I added a 1/2 teaspoon. DON’T DO THAT. You may as well spread toothpaste all over your brownies, the whole tube. THESE brownies though, are the perfect level of mint, which is to say, not in your face. Make these for St. Patrick’s Day!

Chopped up mints and marshmallow cream

Chopping up thin mints on top of mint layer

You’ll like these goods too:

Facebook | Pinterest | Instagram | Twitter


Thin Mint Marshmallow Brownies

5 from 2 votes
Prep: 10 minutes
Cook: 25 minutes
Total: 35 minutes
Servings: 12 Servings
Rich, fudgy brownies are spread with lightly minted marshmallow creme, then sprinkled with crushed Thin Mints. What's that you say? Over the top? I can't hear you.


For the brownies

  • 3/4 cup salted butter
  • 1 & 1/4 cups granulated sugar
  • 3/4 cup unsweetened cocoa powder
  • 1/4 teaspoon salt
  • 1/2 tablespoon water
  • 1 teaspoon vanilla extract
  • 2 eggs
  • 1/2 cup all-purpose flour
  • 1/2 cup semi-sweet or dark chocolate chips

To top:

  • 1 7-oz. jar marshmallow crème
  • 1/8 teaspoon or less peppermint extract
  • 10 drops green food coloring
  • 15 thin mints or mint Oreos, roughly chopped


  • Preheat oven to 350 degrees F.
  • Line an 8x8 or 9x9 inch baking dish with aluminum foil and spray with nonstick spray. Or just spray the pan.
  • Melt butter in a large saucepan over medium heat. Stir occasionally. The butter will foam up, then back down and start forming brown colored milk solids or “bits”. When it is a nice light brown and it starts to smell like you could drink it straight, that’s when you know it’s done.
  • (You can skip this step and just melt the butter if you want. The brownies don't taste like brown butter, this step just makes them extra rich.)
  • While your butter is browning, combine sugar, cocoa, and salt in a bowl or stand mixer.
  • Once the butter is nice and brown, immediately pour the butter into the bowl with the sugar and cocoa (so that it stops cooking. You don’t want it to burn). Beat the mixture until it is smooth.
  • Add the water and vanilla. Add the eggs, mixing quickly so they don't curdle (if your butter is still pretty hot).
  • Add the flour and chocolate chips and mix until just incorporated. Batter will be about the consistency of cement. Have a taste. It’s awesome.
  • Use a sturdy rubber spatula to spread batter in the prepared pan. Bake for 25-30 minutes until toothpick inserted comes out clean.
  • Let the brownies cool. Or stick them in the freezer for 10 minutes like I did and call it good.
  • Peel all the foil off the top of the jar of marshmallow creme. Microwave for 15-20 seconds, or until it just starts to rise above the lip of the jar.
  • Scoop the creme into a bowl or stand mixer. Add a little peppermint extract and green food coloring. Mix well, scraping sides.
  • Pour the marshmallow creme over the brownies and spread to the edges.
  • Top with the chopped thin mints, pressing in lightly with your hands if necessary. Let the marshmallow settle back to room temperature before cutting and serving.


Source: Recipe idea from Southern Girl Ramblings


Serving: 1brownie | Calories: 339kcal | Carbohydrates: 43g | Protein: 4g | Fat: 19g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Trans Fat: 1g | Cholesterol: 58mg | Sodium: 231mg | Potassium: 177mg | Fiber: 3g | Sugar: 30g | Vitamin A: 398IU | Calcium: 23mg | Iron: 3mg
Course: Dessert
Cuisine: American
Calories: 339
Keyword: brownie, marshmallow, Think Mint
Did you make this? I'd love to see it!Mention @thefoodcharlatan or tag #thefoodcharlatan!

Categorized as , , ,

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.

You May Also Like...


  1. Karen, I’ve tried mint chocolate ice-cream, but I’ve never tried anything like these brownies. This looks so exciting!! Can’t wait to try it out. Thank you very much for this delicious recipe :)

  2. You are too funny! Love your stories :) And LOVE these brownies, wow do they ever look delicious!

  3. Well, hello lover. I think you should stop by my house this evening, with all of your minty, chocolate-oozing goodness. Seriously, these look amazing. Pinned.

  4. I’m not much of a Girl Scout cookie person ( I know *gasp*) but these gooey brownies look kind of amazing!

    1. Shhh I’m kinda with you Chels. I would always prefer a warm cookie out of the oven…or brownie, topped with a cookie…I’ve got issues, haha.

  5. Umm, woah. These brownies are over-the-top incredible! They look amazing (and perfect for St. Patty’s Day!)

  6. Oh, goodness, Karen! These are so awesome! & playing a board game via google hangout is just genius! BUT you won’t find me there because I’ll be stuffing my face with these brownies ;)

  7. hahaha oh my gosh your husband! How funny! That’s so something mine would do and I would believe him!

    And these brownies – they look outrageously good!

  8. I totally love sappy love stories! I wish it were true… Thanks Eric, for bursting my bubble. ;) When my guy had to go to Taiwan a few years ago, I actually wrote him a note for every single day he was gone. What totally surprised me was when I found ALL of them when we moved last summer — he kept them!! Guess he’s kind of a romantic too. Anyway. These brownies. Definitely fall under the Amy category of romance. They look SO good!

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.