Peppermint Oreo Brownies – Fudgy, Festive, and Easy
These Peppermint Oreo Brownies are what winter dessert dreams are made of: rich, fudgy chocolate, cool peppermint, and crunchy cookie pieces in every bite. They feel special enough for the holidays but are simple enough to bake on a weeknight. The texture lands right between gooey and chewy, with a little crunch on top from crushed candy canes.
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If you love the combo of chocolate and mint, this pan won’t last long. Serve them warm with ice cream, or wrap slices as gifts. Either way, they’re a crowd-pleaser.
Ingredients
Method
- Prep the pan and oven: Heat oven to 350°F (175°C). Line an 8x8-inch metal pan with parchment, leaving overhang for easy lifting. Lightly spray.
- Melt the butter and chocolate: In a microwave-safe bowl, melt butter and chocolate in 20–30 second bursts, stirring between, until smooth. Cool 5 minutes.
- Whisk in sugars: Add granulated and brown sugar to the warm chocolate and whisk until glossy.
- Add eggs and extracts: Whisk in eggs one at a time until the batter thickens and looks shiny. Stir in vanilla and peppermint extract. Start with 1 teaspoon peppermint; you can add up to 1.5 teaspoons if you love a stronger mint.
- Combine dry ingredients: In a separate bowl, whisk flour, cocoa powder, and salt. Sift cocoa if clumpy.
- Fold gently: Use a spatula to fold dry ingredients into the wet mix just until combined. Don’t overmix.
- Add the mix-ins: Fold in chopped Oreos, crushed candy canes, and mini chocolate chips if using. Reserve a handful of Oreos and candy canes for the top.
- Fill the pan: Spread batter evenly. Sprinkle the reserved Oreos and candy on top, pressing lightly so they stick.
- Bake: Bake 26–32 minutes, rotating the pan once. They’re done when the edges are set, the top is crackly, and a toothpick in the center comes out with moist crumbs (not wet batter).
- Cool completely: Cool in the pan on a rack at least 1 hour for clean slices. The candy on top hardens as it cools.
- Slice and serve: Lift out using the parchment. Use a warm, clean knife for neat edges. Serve plain or with vanilla ice cream.
What Makes This Recipe So Good
- Perfect texture balance: Fudgy center, crisp edges, and crunchy Oreo bits for contrast.
- True peppermint flavor: Just enough peppermint extract to taste fresh without overpowering the chocolate.
- One bowl friendly: Melt, mix, fold, and bake.
Minimal dishes, maximum payoff.
- Holiday-ready look: Crushed candy canes on top give the brownies a festive finish.
- Make-ahead friendly: Flavor deepens by day two, and they freeze well.
Shopping List
- Unsalted butter (1 cup / 225 g)
- Semi-sweet chocolate chips or chopped chocolate (1 cup / 170 g)
- Granulated sugar (1 cup / 200 g)
- Light brown sugar, packed (1/2 cup / 100 g)
- Large eggs (3), room temperature
- Vanilla extract (1 teaspoon)
- Peppermint extract (1 to 1.5 teaspoons)
- All-purpose flour (3/4 cup / 95 g)
- Unsweetened cocoa powder (1/3 cup / 35 g), natural or Dutch-process
- Kosher salt (1/2 teaspoon)
- Oreos or chocolate sandwich cookies (16–20 cookies), roughly chopped
- Crushed candy canes or peppermint candies (1/3–1/2 cup), plus extra for topping
- Optional: Mini chocolate chips (1/2 cup) for extra chocolate pockets
- Cooking spray or parchment for lining the pan
Step-by-Step Instructions
- Prep the pan and oven: Heat oven to 350°F (175°C). Line an 8×8-inch metal pan with parchment, leaving overhang for easy lifting. Lightly spray.
- Melt the butter and chocolate: In a microwave-safe bowl, melt butter and chocolate in 20–30 second bursts, stirring between, until smooth.
Cool 5 minutes.
- Whisk in sugars: Add granulated and brown sugar to the warm chocolate and whisk until glossy.
- Add eggs and extracts: Whisk in eggs one at a time until the batter thickens and looks shiny. Stir in vanilla and peppermint extract. Start with 1 teaspoon peppermint; you can add up to 1.5 teaspoons if you love a stronger mint.
- Combine dry ingredients: In a separate bowl, whisk flour, cocoa powder, and salt.
Sift cocoa if clumpy.
- Fold gently: Use a spatula to fold dry ingredients into the wet mix just until combined. Don’t overmix.
- Add the mix-ins: Fold in chopped Oreos, crushed candy canes, and mini chocolate chips if using. Reserve a handful of Oreos and candy canes for the top.
- Fill the pan: Spread batter evenly.
Sprinkle the reserved Oreos and candy on top, pressing lightly so they stick.
- Bake: Bake 26–32 minutes, rotating the pan once. They’re done when the edges are set, the top is crackly, and a toothpick in the center comes out with moist crumbs (not wet batter).
- Cool completely: Cool in the pan on a rack at least 1 hour for clean slices. The candy on top hardens as it cools.
- Slice and serve: Lift out using the parchment.
Use a warm, clean knife for neat edges. Serve plain or with vanilla ice cream.
How to Store
- Room temperature: Store in an airtight container for 3–4 days. Place parchment between layers to prevent sticking.
- Refrigerator: Keeps up to 1 week.
The chill firms the brownies and intensifies the mint.
- Freezer: Wrap individual squares in plastic, then place in a freezer bag for up to 2 months. Thaw at room temp or warm in the microwave for 10–15 seconds.
Why This is Good for You
- Built-in portion control: Dense, satisfying brownies make it easier to enjoy a small square and feel content.
- Peppermint can feel soothing: The aroma and flavor often feel refreshing and can make a rich dessert feel lighter.
- Homemade wins: You control the ingredients and sweetness, and can adjust for dietary needs.
- Joy counts, too: Sharing a festive treat brings connection and comfort, which is its own kind of wellness.
Pitfalls to Watch Out For
- Overbaking: Pull them when the center still looks slightly soft. They set as they cool.
Overbaked brownies turn cakey and dry.
- Too much peppermint: Peppermint extract is potent. Measure carefully and taste the batter after 1 teaspoon before adding more.
- Overmixing the batter: Stir just until the flour disappears to avoid tough, rubbery brownies.
- Using a glass pan: Glass runs hot and can overbake the edges. If using glass, reduce oven temp by 25°F and check early.
- Adding candy too early: Fold crushed candy canes into the batter right before baking to prevent early melting and stickiness.
Recipe Variations
- Double Chocolate Peppermint: Add 1/2 cup white chocolate chips for creamy pops against the dark fudge.
- Mocha Mint: Stir 1 tablespoon instant espresso powder into the cocoa for a deeper chocolate note.
- Gluten-Free: Swap in a 1:1 gluten-free all-purpose flour blend.
Use gluten-free sandwich cookies.
- Dairy-Free: Use a dairy-free butter substitute and dairy-free chocolate. Check that your cookies and candy canes are dairy-free.
- Thin Mint Style: Replace Oreos with thin mint cookies and reduce peppermint extract to 1/2–3/4 teaspoon.
- Frosted: Once cooled, top with a thin layer of peppermint buttercream or a simple chocolate ganache, then sprinkle crushed candy canes.
FAQ
Can I use peppermint oil instead of peppermint extract?
Peppermint oil is much stronger. If using oil, start with just 1–2 drops, taste, and adjust very carefully.
It’s easy to overdo.
Do I have to use candy canes?
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No. You can skip them or replace with peppermint baking chips, Andes mints, or extra Oreos. The brownies will still be minty from the extract.
How do I know when the brownies are done?
Look for set edges, a shiny, crackly top, and a toothpick that comes out with moist crumbs.
If it’s completely clean, they’re likely overbaked.
Can I double the recipe?
Yes. Bake in a 9×13-inch pan and increase the time to about 32–38 minutes. Start checking at 30 minutes and watch for the same doneness cues.
What if I only have Dutch-process cocoa?
Dutch-process works well here.
The recipe doesn’t rely on baking soda, so either natural or Dutch cocoa is fine.
Why did my candy canes melt into the batter?
If the pieces are very fine or the batter is warm, they can dissolve. Use slightly larger chunks and fold them in just before baking. Press a few on top after the batter is in the pan.
Can I make these without eggs?
You can try an egg replacer such as aquafaba (3 tablespoons per egg, whipped lightly) or a commercial egg substitute.
Expect a slightly different texture, but still tasty.
How should I cut clean slices?
Cool completely, even chill for 30 minutes, then use a warm, sharp knife. Wipe the blade between cuts.
Can I reduce the sugar?
You can reduce total sugar by about 10–15% without major texture issues. Much more than that may affect moisture and shine.
What’s the best chocolate to use?
Use a good-quality semi-sweet or dark chocolate you enjoy eating.
Chips are fine, but chopped bars melt silkier and give a richer flavor.
Wrapping Up
Peppermint Oreo Brownies deliver everything you want in a festive dessert: deep chocolate flavor, cool mint, and a playful cookie crunch. They’re easy to make, dependable for parties, and customizable for different diets. Keep a batch on hand for gifting, gatherings, or those winter nights when only a warm, fudgy square will do.
Happy baking, and enjoy every minty bite.
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