A boxed brownie glow-up with layers of mint Oreo thins and silky ganache for a bakery-style treat with minimal effort.
These Mint Oreo Ganache Brownies are rich, chocolatey, and full of cool mint flavor in every bite. You start with a simple boxed mix, add a layer of mint Oreo thins for crunch and flavor, then finish it all with a smooth dark chocolate ganache. This is the kind of treat that looks bakery-made but takes almost no time to pull together—perfect for parties, holidays, or just because.
Why You’ll Love This Recipe
- Starts with a boxed brownie mix to keep it easy.
- Topped with mint Oreo thins for flavor and crunch.
- Finished with a glossy dark chocolate ganache.
- Perfect make-ahead dessert for parties or gifting.
- Mint Oreo ganache brownies taste like a bakery treat.
Ingredient Notes
- Brownie Mix – Any boxed mix works, but go for a fudge-style one if you want extra richness.
- Mint Oreo Thins – The thinner texture makes them easier to press into the batter and adds just the right amount of crunch and mint flavor.
- Heavy Cream – Heats quickly in the microwave and creates a smooth ganache when combined with chocolate chips.
- Dark Chocolate Chips – Use dark or semisweet depending on your preference. Dark gives a richer contrast to the sweet brownies and Oreos.
Before You Bake
Do I need to use Mint Oreo Thins or can I use regular Mint Oreos?
Mint Oreo Thins work best because they’re lighter and won’t sink as much into the batter, but regular Mint Oreos can be used if that’s what you have.
Can I use milk chocolate instead of dark for the ganache?
Yes! Milk chocolate will make the ganache sweeter and creamier—just be sure to use good quality chips.
Should the brownies cool completely before adding the ganache?
Yes, letting them cool ensures the ganache sets properly and doesn’t melt into the brownies.
Mint Oreo Ganache Brownies
Ingredients
- 1 box brownie mix (plus ingredients listed on the box)
- 1 package Mint Oreo Thins
- 1/2 cup heavy cream
- 1/2 cup dark or semisweet chocolate chips
Instructions
- Preheat your oven to 350°F and line an 8” square pan with parchment paper.
- Lightly coat with baking spray. Prepare the brownie batter according to the package instructions, then pour it into the prepared pan.
- Press 16 Mint Oreo Thins evenly across the top of the batter.
- Bake for 30–35 minutes or until set. Let the brownies cool completely before topping.
- To make the ganache: Heat the heavy cream in a microwave-safe bowl for 1 to 1½ minutes, until very hot but not boiling. Add the chocolate chips, let sit for 1 minute, then whisk until smooth and glossy.
- Pour the ganache over the cooled brownies and spread evenly.
- Top with crushed Mint Oreo Thins.
- Refrigerate for at least 30 minutes to set. Let the brownies come to room temperature before slicing and serving.
FAQ
Can I make Mint Oreo Ganache Brownies ahead of time?
Absolutely. These brownies are great made a day ahead and stored in the fridge.
How should I store the finished brownies?
Store them in an airtight container in the fridge for up to 4 days. Let them sit at room temp before serving for the best texture.
Can I freeze these brownies?
Yes, freeze them in a single layer until firm, then wrap and store for up to 2 months.
What pan size works best?
An 8” square pan gives the perfect thickness. A 9” pan will work but the brownies will be slightly thinner.
Can I double the recipe for a crowd?
Yes, double all ingredients and use a 9×13” pan. Adjust baking time to 35–40 minutes.
Sprinkle of Fun
These Mint Oreo Ganache Brownies are perfect for a cozy winter night in. Call it Minter, your own minty twist on winter, and plan a little gathering with hot coffee, cocoa, and these brownies as the sweet star. Set up a game night with classics like Uno, Yahtzee, or your favorite board games. Light a candle, throw on a fuzzy blanket, and enjoy the cool mint and rich chocolate combo while the weather outside does its thing. It’s low-key, fun, and deliciously minty.
Grab More Treats
- If you’re a mint-lover, check this recipe for Chocolate Mint Cheesecake Cookie Cups!
- Want more brownie ideas? Click here!
- Check out my Chocolate Lovers ebook for even more recipes.
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