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These Ultimate Mint Oreo Brownies are thick, ultra fudgy, and stuffed with whole Mint Oreos in every bite. A rich chocolate brownie base surrounds a hidden layer of mint crème Oreos, creating the perfect balance of deep cocoa flavor and cool mint.
If you’re looking for the ideal St. Patrick’s Day dessert or an easy mint Oreo brownie recipe that chocolate mint lovers will obsess over, this is it. The bakery-style texture, dramatic cross section, and simple one-bowl method make these brownies a guaranteed crowd favorite.
Why You’ll Love These Mint Oreo Brownies
- Thick, ultra fudgy brownie texture
- Stuffed with whole Mint Oreos
- A must try for St. Patrick’s Day dessert tables, plus it could be the amazing ending to an Irish Beef Stew served with this Irish Mule .
- Easy one-bowl brownie recipe
Ingredients for This Mint Oreo Brownie Recipe
Here are the ingredients you will need to make these mint Oreo brownies. Make sure to scroll down to the recipe card for the full detailed ingredient measurements.
- Butter
- Oil– I used vegetable oil for this but feel free to use canola oil or even coconut oil.
- Granulated sugar & brown sugar
- Eggs
- Vanilla extract
- Salt
- Flour – A little all purpose flour goes a long way in this recipe.
- Cocoa powder– I like to use Dutch-process cocoa powder, but any unsweetened cocoa powder would work here, just make sure you are using high-quality cocoa powder.
- Mint Oreos – The mint flavor from the Oreos pairs so well with these fudge brownies. It has the perfect balance of chocolate and mint flavors.
Variations & flavor swaps for this ultra fudgy brownie base
Here are some fun variations to add to your brownie recipe:
- Andes Mint Oreo Brownies – Add chopped Andes Mints for extra mint chocolate intensity.
- Peppermint Oreo Brownies – Use Peppermint Oreos instead of Mint Oreos. or even add a little peppermint extract to the batter.
- Extra Chocolatey Version – Add ⅓ cup chocolate chips to the batter.
Why These Mint Oreo Brownies Are Perfect for St. Patrick’s Day
- The festive green mint filling makes them naturally shamrock-ready.
- The bold chocolate and mint flavor fits perfectly on a St. Patrick’s Day dessert table.
- Easy to bring for classroom parties or potlucks.
- Can be decorated with green frosting, sprinkles, or white chocolate drizzle for an extra festive look.
Since you are here, you have to check out this McDonald’s shamrock shake, this Chilled Crumbl Mint Brownie Cookies, Andes Mint Brownies, as well as this Mcdonald’s shamrock Oreo McFlurry recipe.
How to make these St Patrick’s Day Oreo Brownies?
Here’s how to make these Mint Oreo brownies.
- Line a square baking pan with parchment paper and set aside.
- In a large microwave-safe bowl, melt the butter, oil, brown sugar, and white sugar together.
- Whisk well until combined then add in the eggs and vanilla extract and mix.
- Add the dry ingredients to the wet ingredients and fold just until the flour mixture disappears.
- Pour half of the brownie batter into the prepared pan.
- Add a layer of whole Mint Oreos over the brownie base, slightly pressing them into the batter. This creates that signature stuffed brownie center once baked.
- Then cover with the remaining batter. We are using whole Oreos and some sliced-in-half Oreos for this step.
- Sprinkle the chopped-up remaining Oreos on top and bake in the preheated oven.
- Allow the brownies to cool down fully before slicing into them.
How to Turn These into Shamrock Brownies
- Add green frosting
- Add green sprinkles
- Add white chocolate drizzle
- Add chopped Andes
How to stove these brownies?
For best results store these in an airtight container at room temperature for up to 5 days for a quick grab-and-go sweet treat. The best way to have them last longer though would be to chill them in the fridge in an airtight container for longer. Make sure to get them to room temperature before enjoying
Frequently asked questions – FAQ
These brownies bake up with a crackly top, dense fudgy center, and a dramatic Oreo-stuffed middle layer. The combination of butter, oil, and Dutch-process cocoa powder creates a rich, bakery-style texture that stays soft for days.
Yes! Peppermint Oreos work beautifully and create a slightly stronger mint flavor. This is a great option around Christmas as well.
Absolutely! Pop them in an airtight container and in the freezer for up to 3 months. You can let them thaw in the fridge overnight or on the counter for a few hours. My favorite way to enjoy them since I am very impatient is to pop them in the microwave for a few seconds to get them gooey again and let that rich chocolate flavor shine through again.
No microwave, no problem. You can melt all of your ingredients in a double boiler. This will give you the same results without a microwave. Just make sure to heat the mixture well, once it boils allow it to stay on the heat for another 2 minutes to let the sugar dissolve.
Tip number one is to always allow your brownies to cool down fully, I let mine cool down for 8 hours before I sliced them here for the photos! The next tip is to use a sharp knife to slice them. If you want to be a little extra dip your knife in a tall glass of warm water to heat up the blade a little bit, wipe it with a piece of paper towel then slice into your brownies! Let me know if these hacks worked for you in the comments.
Mint Oreo brownies
Ingredients
- 2/3 cup butter
- 1/4 cup vegetable oil
- 1 cup granulated sugar
- 1/3 cup brown sugar
- 2/3 cup cocoa powder
- 2 egg cold
- 1 tsp vanilla extract
- 1/2 tsp salt
- 1/2 cup all purpose flour
- 15 mint Oreos Extra 5 for topping
Instructions
- Preheat the oven to 350F then line an 8×8 inch baking pan with parchment paper and set aside.
- In a microwave-safe bowl melt the butter, oil, and both sugars, together in 30-second intervals mixing in between every time. Once fully melted microwave for another 1 minute and stir vigorously to allow the sugar to melt fully. Using a hand mixer or stand mixer here is best.2/3 cup butter, 1/4 cup vegetable oil, 1 cup granulated sugar, 1/3 cup brown sugar
- Whisk in the eggs one at a time then add in the vanilla. You want the batter to pull from the bowl a little bit.2 egg, 1 tsp vanilla extract
- Add in the flour, cocoa powder, and salt and fold just until combined.1/2 tsp salt, 1/2 cup all purpose flour, 2/3 cup cocoa powder
- Pour half of the batter into the parchment paper-lined baking pan and spread evenly.
- Place the Oreos in the center of the batter (see photo) then top with the rest of the brownie batter and spread to cover.15 mint Oreos
- Top with the 5 crushed Oreos and bake in the preheated oven for 30 minutes.
- Allow the brownies to cool down fully on a wire rack before slicing into them for the perfect square crinkle top slice every time.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
5/5 stars! I made in a square 9×9 pan & baked for 25 min & it turned out perfectly. They are SO moist, fudgy, & perfect balance of chocolate/mint flavor & of oreo/brownie.
Going to make these today! Curious why it calls for cold eggs as I always use room temp.