These Triple Layer Fudgy Mint Oreo Brownies are a chocolate lover’s dream with a refreshing twist! They’re made up of three rich, fudgy layers packed with chunks of Mint Oreos that add just the right amount of minty crunch. The brownies are dense, chewy, and topped with a glossy chocolate ganache that makes every bite feel extra special.
I love making these brownies when I want to impress friends without spending hours in the kitchen. The Mint Oreos give the brownies a cool, fresh flavor that balances the deep chocolate perfectly. Plus, the triple layers give it a fun texture—soft, gooey, and crisp all at once! It’s one of those treats that everyone asks for again and again.
My favorite way to serve these brownies is slightly warmed, so the ganache is nice and melty, with a glass of cold milk or a scoop of vanilla ice cream on the side. They make a great dessert for holiday parties or any time you’re craving something chocolatey but with a little minty surprise. Trust me, once you try these, they’ll quickly become your go-to for brownie night!
Key Ingredients & Substitutions
Butter: Using unsalted butter helps control the salt level. You can swap it with margarine or vegan butter for a dairy-free version, but the flavor might be slightly different.
Granulated Sugar: This sweetens and helps create that classic brownie texture. You could try brown sugar for a bit of moisture and a caramel note.
Mint Oreos: These give the brownies a cool mint flavor and crunchy texture. If you can’t find Mint Oreos, regular Oreos with a hint of peppermint extract mixed into the batter works well.
Cocoa Powder: Unsweetened cocoa powder adds rich chocolate flavor. Dutch-processed cocoa can be used for a smoother taste but adjust baking soda or powder if your recipe calls for it.
Eggs: Eggs bind everything and add moisture. For an egg-free option, use flax eggs (1 tbsp flaxseed meal + 3 tbsp water per egg) but the texture may be less fudgy.
How Do I Layer the Brownie Batter and Oreos Without Making a Mess?
Layering can be tricky but here’s how I keep it neat:
- First, spread half the brownie batter gently in the pan with a spatula, smoothing it evenly.
- Place the Oreo cookies carefully in a single layer right on top without pressing them too hard.
- Then, slowly spoon the remaining batter over the Oreos. Use an offset spatula or back of a spoon to gently cover the cookies without disturbing them.
- Try to spread the batter evenly, but don’t worry if some Oreos peek through—that adds to the look and flavor!
Patience here helps keep those layers distinct and makes for a beautiful and delightful bite every time.
Equipment You’ll Need
- 9×13 inch baking pan – I use this size because it fits all the layers nicely and cooks evenly.
- Medium saucepan – for melting butter smoothly without burning it.
- Mixing bowls – smaller ones for combining dry ingredients and larger for mixing wet ingredients.
- Spatula or Spoon – helps spread the batter evenly and gently layer the Oreos without breaking them.
- Parchment paper (optional) – makes it easier to lift out and cut the brownies cleanly.
Flavor Variations & Add-Ins
- Use dark chocolate or milk chocolate chips instead of semi-sweet for a different chocolate intensity.
- Swirl in peppermint or mint extract into the batter for a more pronounced mint flavor without Oreos.
- Add chopped nuts like walnuts or pecans for crunch and extra flavor.
- Mix in white chocolate chips with the fudge layers for a sweet, creamy contrast.
How to Make Triple Layer Fudgy Mint Oreo Brownies
Ingredients You’ll Need:
- 1 cup (2 sticks) unsalted butter
- 2 cups granulated sugar
- 4 large eggs
- 1 teaspoon vanilla extract
- 1 cup all-purpose flour
- 1 cup unsweetened cocoa powder
- 1/2 teaspoon salt
- 1 cup semi-sweet chocolate chips (optional for extra fudginess)
- About 20 Mint Oreos (regular size)
Time You’ll Need
This recipe takes about 15 minutes to prepare and 35-40 minutes to bake. Allow an additional 30 minutes for the brownies to cool completely in the pan before slicing and serving.
Step-by-Step Instructions:
1. Prepare Your Pan and Oven:
Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking pan or line it with parchment paper for easy removal later.
2. Make the Brownie Batter:
In a medium saucepan, melt the butter over low heat. Once melted, remove it from heat and quickly stir in the granulated sugar until well combined.
Beat in the eggs one at a time, mixing well after each addition to make a smooth mixture. Stir in the vanilla extract.
In a separate bowl, sift together the flour, unsweetened cocoa powder, and salt to avoid lumps. Gradually add the dry ingredients into the wet mixture, stirring just until everything comes together. If you’d like, fold in the chocolate chips now for extra fudgy brownies.
3. Layer and Bake:
Spread half of your brownie batter evenly into the prepared pan. Carefully place a single layer of Mint Oreos on top of the batter, spacing them evenly.
Gently spread the remaining brownie batter over the Oreo layer, trying to cover the cookies as much as possible without mixing the layers together.
Bake for 35-40 minutes or until a toothpick inserted near the center comes out with moist crumbs but no wet batter. Keep an eye on them starting at 35 minutes.
4. Cool and Serve:
Take the brownies out of the oven and let them cool completely in the pan—this helps the layers set and makes cutting easier.
If you want, add a Mint Oreo on top of each brownie for an extra festive touch before the brownies are fully cool.
Cut into squares and enjoy your delicious, fudgy, minty treat!
Can I Use Regular Oreos Instead of Mint Oreos?
Yes! Regular Oreos work perfectly if you’re not a fan of mint, or can’t find Mint Oreos. For a hint of mint flavor, add a few drops of peppermint extract to the brownie batter.
How Should I Store Leftover Brownies?
Store leftover brownies in an airtight container at room temperature for up to 3 days. For longer storage, keep them in the fridge for up to a week or freeze them for up to 3 months. Thaw frozen brownies at room temperature before serving.
Can I Make These Brownies Ahead of Time?
Absolutely! You can prepare the batter and layer the brownies a day in advance, then bake them fresh when you’re ready. Just cover the unbaked pan tightly with plastic wrap and keep refrigerated overnight.
What’s the Best Way to Reheat These Brownies?
For a warm, gooey treat, microwave a brownie square for about 15-20 seconds or warm it briefly in the oven at 300°F. Pair with a scoop of vanilla ice cream for extra indulgence!
