Triple Layer Mint Brownies — These layered brownies are loaded with rich textures and flavors, from the dense fudgy brownies layer, to the soft, fluffy minty layer, with oodles of crushed Mint Oreos throughout.
Oreo-Stuffed Chocolate Mint Brownies
Happy Saint Patrick’s Day! A few weeks early, but who’s counting? I couldn’t resist sharing these. Now.
These brownies are the best thing to come out of my kitchen thus far in 2012. I know we’re only two months into the year, but I assure you, these take the cake take the brownie.
I cannot convey to you how good these are. The mint brownies themselves are so rich, and the mint Oreos crumbled in the batter add a crunchy minty surprise.
The green minty marshmallow mixture that is swirled throughout the brownie batter add a sweet soft surprise. (I’m all about contrasting flavors and textures).
The top layer of green minty marshmallow mixture, with melted white chocolate chips, vanilla buttercream frosting, and more crumbled Oreos…
Heaven-sent. Or Saint Patrick sent.
PMS? Bad day? Child not cooperating? Husband not cooperating? Your dog ate your homework? Your favorite lip gloss has been discontinued? You typically don’t celebrate St. Patrick’s Day? You just got a parking ticket? Your boss is mean? Your best friend forgot your birthday? Your husband forgot your birthday?
Not a problem. Have one of these.
Mint Oreos, chocolate, and green food will cure whatever ails you. And by green food, I do mean one of these and not a kale salad.
Both Saint Patrick and I urge you to make these.
What’s in the Oreo-Stuffed Mint Brownies?
To make the triple layer chocolate mint brownies, you’ll need:
- Marshmallow fluff
- Mint extract
- Green food coloring
- Baking chocolate
- Unsalted butter
- Granulated sugar
- Eggs
- Vanilla extract
- Brewed coffee (optional)
- Cool Mint Oreos
- Powdered sugar
- White chocolate chips
How to Make Oreo-Stuffed Mint Brownies
Let’s talk about what’s going on in these minty Oreo fudge brownies. First there is an incredibly dense, rich, and fudgy brownie base layer.
I adapted my own Fudgy Nutella Brownies, which is my favorite brownie recipe of all time, and I’ve sampled one or two brownies over the years. It’s the best-tasting (and easiest) brownie-from-scratch recipe I’ve ever tried because the resulting brownies are incredibly fudgy, dense, and not at all cakey or dry.
To the brownie batter for the base layer, I added a dozen crumbled Cool Mint Oreo Cookies (Layer 1).
I also made a green minty marshmallow mixture, comprised of Marshallow Fluff, peppermint extract, and green food coloring, and I swirled half of it through the brownie batter along with the crumbled Oreos.
To say this green mixture is “pretty good” is an understatement: white chocolate chips + buttercream frosting + Marshmallow Fluff + peppermint extract = Dive In and Don’t Come Up For Air.
I would like to have this stuff on hand for mental health days because a spoonful of it is guaranteed to put a smile on your face. Rich, sweet, decadent, minty, yet still fluffy.
While the brownies were baking I made the next layer (Layer 2): melted white chocolate chips and I made a batch of buttercream frosting.
Then, I combined the white chocolate chips + buttercream frosting + the remaining half of the green minty marshmallow mixture
After spreading the Green Goddess over the cooled brownies and because there wasn’t enough going on already, I crumbled a dozen and a half more Cool Mint Oreos over the top (Layer 3).
Can the Brownies Be Prepared in Advance?
Yes! The brownies will keep well for a couple days, but if you plan to serve them to guests I think making them 24 hours in advance is perfect.
Cover them tightly in the fridge so the brownie base doesn’t dry out, and you’re all set.
How to Store Oreo-Stuffed Mint Brownies
I prefer these bars chilled and I store them in the refrigerator in an airtight container for up to 10 days or in the freezer for up to 6 months.
Tips for the Best Chocolate Mint Brownies
This recipe below looks long because I gave instructions for how to make both brownies and frosting from scratch. Use a boxed brownie mix and a can of frosting if that’s what it takes for you to make these.
Yes, there are a few stages and steps but it’s all worth it, I promise. Really you’re just making brownies, making a green minty marshmallow mixture, and crumbling Oreos everywhere. Not hard at all and no electric mixer is necessary.
One last note: do NOT add more mint extract than the recipe calls for, otherwise your brownies will go from being mint brownies to mouthwash brownies. Yuck, no thanks!
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Triple Layer Fudgy Mint Oreo Brownies
Ingredients
Filling
- 1 7- ounce jar Marshmallow Fluff
- ⅛ teaspoon mint extract*
- 8 drops+ green food coloring, or until desired shade of green is reached
- 1 batch of brownies – see ingredients below in step 2, or use 1 box of brownie mix – make according to directions on the box by adding the water, oil, eggs
- Brownies
Brownies
- 4 ounces baking chocolate (I used 9 squares of TJ’s 72% chocolate bar
- ¾ cup unsalted butter, melted (1 1/2 sticks)
- 2 cups granulated sugar
- 3 eggs
- 1 teaspoon vanilla extract
- 2 tablespoons espresso or brewed coffee, optional
- 1 cup all-purpose flour
- 12 Cool Mint Oreo Cookies, hand-crumbled
- Frosting and Topping
Frosting and Topping
- ½ cup butter or margarine, softened
- 3 to 4 cups powdered sugar
- 1 teaspoon vanilla extract
- splash of milk, if necessary for consistency
- ¾ cup white chocolate chips, melted
- 18 Cool Mint Oreo Cookies, hand-crumbled
Instructions
- Preheat oven to 350°F. Line a 9×13-inch pan with foil and spray it with cooking spray.
Filling:
- In medium bowl, stir together marshmallow fluff, mint extract* (be very careful and do not use more than this unless you love mint; a little bit of mint goes a very long way), 4 drops of food coloring, or until light green is achieved; set aside.
Brownies:
- Microwave chocolate and butter in large microwave-safe bowl for 90 seconds or until butter is melted. Stir until chocolate is completely melted.
- Stir in sugar (it will seem very granular, this is okay).
- Stir in eggs and vanilla. If adding espresso or coffee, add it now.
- Stir in flour until just combined, do not overmix.
- Hand-crumble 12 Oreos over the bowl and fold them in.
- Spread brownie batter in prepared pan.
- Drop about 1/2 cup of green filling mixture onto brownie batter and reserve the remainder. Gently pull a table knife through the batter in S-shaped curves for a swirled design.
- Bake 23 to 25 minutes or until brownies are set, taking care not to overbake. (Some people’s ovens and taste preferences may require 25-30 minutes, bake until brownies are done and to your liking).
- Cool completely, about 1 hour, or put the pan into the freezer for 10 minutes if you’re rushed.
Frosting and Topping:
- While brownies are cooling, make vanilla frosting by whisking together the butter, confectioners’ sugar, vanilla, and milk as needed until smooth and fluffy, or beat with an electric mixer. Optionally use 1 cup store-bought vanilla frosting – or use entire can if you want a thicker final green layer.
- In another small microwave-safe bowl, melt the white chocolate chips (microwave on high for 30 seconds; stir and microwave 30 seconds longer; stir until smooth, taking care not to scorch it as white chocolate scorches easily).
- Add the melted white chocolate chips and the vanilla frosting to the reserved green minty marshmallow mixture.
- Stir in 4 drops+ food coloring, or until light green color is reached, and spread over cooled brownies.
- Sprinkle with 18 hand-crumbled Oreo Cookies, slightly pressing them into the green mixture.
- Allow top layer to set fully before slicing and serving.
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
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More Mint Chocolate Desserts:
Mint Chocolate Oreo Bars — These three-layered Oreo bars are easy to make and are almost no-bake! The bars are full of mint flavor, a perfect complement for the chocolate fudge and the chocolate-filled Oreo cookie crust.
Andes Mint Brownies — Super fudgy brownies loaded with Andes! Chocolate + mint is the best! So quick and easy to make. Meet your new favorite brownies!
Loaded Mint Chocolate Chip Cookie Bars — These bars are a mint twist on the classic Seven Layer Bars many grew up with! Made with Ghirardelli Mint Chocolates, Andes Mints, and Mint Oreos on a chocolate chip cookie base.
The Best Chocolate Peppermint Cake — Easy, one-bowl, no mixer cake! Decadently chocolaty, perfectly pepperminty! Your new favorite cake!!
Andes Mint Chip Soft Fudgy Chocolate Cookies — Big, thick, fudgy chocolate cookies with a hint of mint and loads of chocolate in every bite!
Fudgy Mint Chocolate Brookies {brownie + cookie} — Part fudgy brownies; part soft & chewy chocolate cookies. Minty, rich & loaded with Oreos!
Creme de Menthe Bars – The classic bar everyone loves!
I think I am going to try this with Strawberry Oreos and pureed strawberries. What do you think?? I’m not much of a recipe-guru like you!
I would not use mint filling personally with strawberry cookies and pureed strawberries – I just think it would be too much going on personally even though I know real mint and strawberries do pair well together but in this application – not sure. But everyone’s taste buds are different and try whatever floats your boat!
Oh no! I mean replace the mint extract with strawberry puree or flavoring…
I’ m thinking of making these for craft night tomorrow and was wondering if you use salted or unsalted butter for your icing.
unsalted, but salt to your taste if for some reason you like saltier frosting. Enjoy!!!
I are these yesterday with the cheats of box brownie mix and store-bought frosting and I forgot to stir some Oreos into the brownies before baking. They were still fantastic! Thank you for this recipe!
Meant to say I made these ;)
Well sounds like your tweaks (and omission) still worked out for you. Glad you loved them!
These look spectacular! Do you know of any substitutes for marshmallow fluff? I’ve never seen it in Oz, Ill have to see if I can order it online.
Just melt enough marshmallows to yield about 1 1/2 cups melted runny marshmallow-ey liquid. How marshmallows look when melted before you make rice krispy bars, that’s what you’re looking for. Soft and fluffy, gooey, runny. 7 ounces worth, about 1 1/2 cups but not an exact science :)
Oh so good and rich!! I agree they will be better when they are cold. I didn’t have enough time to let them chill before eating them.
So glad you made them! Just pop the whole thing into the freezer for 10 mins even…I love that chilled taste, with the mint, too. Mmmmm :)
I made just the brownie plus mint Oreo part of this recipe and it was a GIANT hit. Also, they loved the foil lined baking pan. Seriously, genius!!
So glad they were a hit! And yes, foil…totally saves on cleanup time and elbow grease. I never bake without it!
I couldn’t get the picture of your brownies out of my head for like a week, so I finally made them! I knew they’d be delicious and perfect for St. Patrick’s Day. I used mint extract as opposed to peppermint, and I’m wondering how different they are? I love love the cool mint Oreos, they’re the best part! And the green frosting layer is really good too. They’re very rich! I took a couple plates of the brownies to an auction at my church and they were sold for the scouting program. :) thanks for the recipe and amazing pictures!
So glad you made and enjoyed them and sounds like you shared some and they were sold…awesome.
I’d say peppermint is a bit stronger, harsher, more “bitey” than mint, which tends to be a bit smoother. I’d liken it peppermint gum vs spearmint gum. I find peppermint is stronger. Not bad, just stronger. It also depends on the quality of extract used. Some extracts are going to be stronger than others, no matter what you use. Anyway…thanks for reading and making these!
I made these for my husband’s work potluck. Couldn’t find mint oreos so I used Grasshopper cookies instead. Absolutely fantastic dessert! I’m glad he took most of them with him, otherwise I would have never been able to keep out of them. They were wildly popular with his co-workers and he had several recipe requests. Bravo!
Thanks, Rebekah. Glad they were a hit! And yes, they are super rich and tempting; potlucks are a good thing, i.e. donate it & get it outta the house! Good to know about the Grasshopper cookies, too.
These are similar but far less steps and mixing this and that together, and very good, too. Not minty though.
https://www.loveveggiesandyoga.com/2012/03/oreo-cookie-stuffed-brownies-with-vanilla-buttercream-frosting.html