Are you searching for the perfect dessert to satisfy your chocolate cravings while delivering a refreshing, cool mint finish? Look no further than these decadent Mint Oreo Brownies. This recipe is a dream come true for anyone who appreciates the classic, sophisticated pairing of rich cocoa and vibrant, cool mint. Whether you are preparing a treat for a holiday gathering, a potluck, or simply treating yourself after a long week, these brownies are designed to impress with their layered textures and bold, eye-catching appearance. Featuring a dense, fudgy brownie base, a hidden swirl of marshmallow sweetness, a creamy mint-infused frosting, and a crunchy topping of crushed mint sandwich cookies, this dessert offers a symphony of flavor in every bite. Follow this guide to achieve bakery-quality results right in your own kitchen with ease and confidence.

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Why You’ll Love These Mint Oreo Brownies
These brownies strike an impeccable balance between a rich, fudgy chocolate foundation and a bright, refreshing mint topping that keeps you coming back for more. They are visually stunning, incredibly easy to customize, and guaranteed to be the highlight of any dessert table.
- Perfect Flavor Harmony: The robust chocolate brownie base pairs seamlessly with the light, creamy mint frosting and crunchy cookie topping for a multi-dimensional experience.
- Beginner-Friendly Technique: Despite their impressive appearance, these brownies utilize straightforward steps, making them accessible even for novice bakers.
- Visually Appealing: The beautiful green-tinted swirl and the crushed cookie layer create a professional, bakery-style aesthetic that is sure to delight guests.
- Versatile Treat: These bars are robust enough for travel, making them an ideal choice for parties, school events, or office celebrations.
Ingredients Breakdown
- Fudge Brownie Mix: Provides the dense, moist, and deeply chocolatey foundation required for this dessert.
- Marshmallow Creme: Adds a soft, pillowy texture and a touch of sweetness that creates a delightful contrast when swirled into the brownie batter.
- Mint Extract: Delivers the signature cool, refreshing flavor that defines these brownies; a little goes a long way.
- Green Food Coloring: Provides the iconic, festive color that makes these brownies stand out and signals the minty flavor profile.
- Mint Baking Chips: These melt into the frosting to create a smooth, mint-chocolate ganache-like texture; white chocolate chips may be substituted if unavailable.
- Mint Creme Filled Chocolate Sandwich Cookies: Offer a satisfying crunch and an extra punch of mint flavor when sprinkled over the top.
- Butter: Forms the base of the rich, velvety buttercream frosting.
- Powdered Sugar: Ensures the frosting is smooth, sweet, and has the perfect spreadable consistency.
- Milk: Used to adjust the consistency of the frosting, making it creamy and easy to spread over the cooled brownies.

Tips To Get Your Recipe Right
- Focus on Fudgy: While you can use any brownie mix, choosing a “fudgy” or “extra-fudgy” variety yields the best contrast against the smooth frosting.
- Master the Swirl: When adding the marshmallow mixture, don’t over-mix. Use a knife to create distinct “S” shapes to ensure you get pockets of marshmallow in every bite.
- Proper Cooling is Crucial: Never attempt to frost your brownies while they are still warm. Let them cool completely to room temperature, or the frosting will melt and slide right off.
- Even Cookie Crushing: Break the mint cookies into irregular, chunky pieces rather than fine crumbs. This provides a better texture contrast and a more rustic, professional look.
- Double Boiler Alternative: If you do not have a microwave to melt your baking chips, use a heat-proof bowl set over a

Storage Tips
- Room Temperature: Keep leftover brownies in an airtight container at room temperature for 3 to 4 days.
- Refrigeration: For a longer shelf life, store them in the refrigerator in an airtight container for 4 to 5 days.
- Freezing: These brownies freeze beautifully! Place them in an airtight, freezer-safe container and store for up to 3 months. Thaw in the refrigerator or on the counter before serving.

FAQs
Can I use peppermint extract instead of mint extract?
While you can use peppermint extract, be aware that it has a more intense, sharp flavor compared to standard mint extract. The overall flavor profile will change, so adjust the amount to taste.
What if I cannot find mint-flavored sandwich cookies?
If mint cookies are out of season or unavailable, you can use regular chocolate sandwich cookies. The brownie and frosting will still provide plenty of mint flavor.
Is it possible to make these brownies from scratch?
Absolutely! If you prefer a from-scratch recipe, feel free to use your favorite homemade fudgy brownie recipe as the base instead of a boxed mix.
How do I know when the brownies are done baking?
Use the toothpick test: insert a toothpick into the center of the brownies. If it comes out clean or with just a few moist crumbs, they are ready to be removed from the oven.
Should I serve these chilled or at room temperature?
These brownies are delicious both ways! Some prefer them chilled for a firmer texture, while others enjoy them at room temperature when the frosting is softer.
Mint Oreo Brownies
20
Bars20
minutes25
minutesFeaturing a dense, fudgy brownie base, a hidden swirl of marshmallow sweetness, a creamy mint-infused frosting, and a crunchy topping of crushed mint sandwich cookies.
Ingredients
- Brownie Base
1 box fudge-style brownie mix (plus required ingredients listed on the box)
7 oz marshmallow creme
1/4 tsp mint extract
4-5 drops green food coloring
- Frosting & Topping
1 cup mint baking chips (or white vanilla baking chips)
1/2 cup salted butter
3 cups powdered sugar
3 tbsp milk
1/2 tsp mint extract (or to taste)
5-6 drops green food coloring
16 mint creme-filled chocolate sandwich cookies, broken into pieces
Directions
- Preheat your oven to 350 degrees F.
- Prepare the brownie batter according to the instructions on the back of your boxed mix.
- Line a 9 x 13-inch baking pan with parchment paper for easy removal, then pour the batter into the pan.
- In a small bowl, combine the marshmallow creme, 1/4 tsp mint extract, and 4-5 drops of green food coloring.
- Drop 6-8 large spoonfuls of the marshmallow mixture onto the top of the raw brownie batter.
- Using a knife, gently drag it through the dollops in an "S" motion to swirl the marshmallow into the batter.
- Bake for 25 minutes, or until a toothpick inserted into the center comes out clean. Allow the brownies to cool completely.
- To make the frosting, beat the butter, powdered sugar, and milk in a mixing bowl until smooth and creamy.
- Melt the mint baking chips in the microwave, then stir the melted chocolate into the buttercream.
- Add 5-6 drops of green food coloring and 1/2 tsp mint extract to the frosting, mixing until uniform.
- Spread the frosting evenly over the cooled brownies.
- Sprinkle the broken mint cookies over the top of the frosting.
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