If you are looking for a dessert that combines a rich, dark chocolate indulgence with a cool, refreshing finish, these Mint Chocolate Chip Brownies are a “pot of gold” find. This recipe takes a classic, one-bowl fudgy brownie and upgrades it with a double dose of mint: refreshing peppermint extract in the batter and vibrant mint chocolate chips folded throughout. It’s the perfect vibrant treat for St. Patrick’s Day, holiday parties, or any afternoon that requires a sweet pick-me-up.

The beauty of these fudgy mint brownies is the texture. They strike that perfect balance between a chewy edge and a dense, almost truffle-like center. By using high-quality cocoa powder and real butter, you get a deep chocolate flavor that perfectly complements the “zing” of the mint chips. These aren’t just brownies; they are a gourmet flavor experience that is incredibly easy to whip up.
Table of Contents
Why You’ll Love These Brownies
- One-Bowl Easy: Minimal dishes and zero fuss—perfect for busy baking days.
- Intense Chocolate Flavor: The dark cocoa base provides a sophisticated backdrop for the sweet mint chips.
- Naturally Festive: The green mint chips give these a holiday look without needing tons of food coloring in the batter.
- Stays Fudgy for Days: These brownies actually improve in texture as they sit, making them ideal for meal prep or gifting.
Ingredients
- ½ cup Unsalted Butter, melted
- 1 cup Granulated Sugar
- 1 Large Egg, room temperature
- 1 tsp Vanilla Extract
- ½ tsp Peppermint Extract (be careful, it’s strong!)
- ⅓ cup Dutch-process Cocoa Powder
- ½ cup All-purpose Flour
- ¼ tsp Salt
- 1 cup Mint Chocolate Chips (the green ones work best for visuals!)
- ½ cup Semi-sweet Chocolate Chips (optional, for extra richness)
Instructions
1. Prep the Pan
Preheat your oven to 325°F (160°C). Grease an 8×8-inch square baking pan or line it with parchment paper, leaving an overhang for easy removal.
2. Mix the Wet Ingredients
In a large bowl, stir together the melted butter and granulated sugar. Add the egg, vanilla extract, and peppermint extract. Whisk until smooth and well-combined.
3. Sift in the Dry Ingredients
Add the cocoa powder, flour, and salt. Gently fold the dry ingredients into the wet mixture using a spatula until justcombined. Do not overmix, or your brownies will become cakey instead of fudgy!
4. Fold in the Chips
Gently stir in ¾ cup of the mint chocolate chips (and the semi-sweet chips, if using). Reserve the remaining ¼ cup of mint chips to sprinkle on top.
5. Bake to Perfection
Pour the batter into the prepared pan and smooth the top. Sprinkle the remaining mint chips over the surface. Bake for 20–25 minutes. A toothpick inserted into the center should come out with a few moist crumbs (but no wet batter).
6. Cool and Slice
Let the brownies cool completely in the pan. This is the hardest part, but it is essential for achieving that perfect fudgy texture. Slice into 16 squares and enjoy!

Expert Tips for Success
- The Low Temp Rule: Baking at 325°F rather than 350°F allows the brownies to cook evenly, ensuring the edges don’t dry out before the center is perfectly set and fudgy.
- Quality Cocoa Matters: Use Dutch-processed cocoa powder for a darker color and a smoother, less acidic chocolate taste that pairs beautifully with mint.
- Don’t Over-Bake: Brownies continue to set as they cool. If the toothpick comes out completely clean, they might be over-baked. You want a few sticky crumbs!
- The “Clean Cut” Secret: For professional-looking squares, chill the brownies in the fridge for 30 minutes before slicing. Use a large, sharp knife and wipe it clean between every cut.
Variations
- Double Mint Layer: Top the cooled brownies with a layer of mint buttercream frosting and a chocolate ganache for a “Triple Layer” experience.
- White Chocolate Mint: Swap the semi-sweet chips for white chocolate chips to make the green mint flavor pop even more.
- Andes Mint Topper: Immediately after taking the brownies out of the oven, lay whole Andes Mint candies across the top. Let them melt for 2 minutes, then spread them with a spatula for a built-in frosting.
- Mint Brownie Sundae: Serve warm with a scoop of mint chocolate chip ice cream and a drizzle of hot fudge.
FAQ: Mint Chocolate Chip Brownies
Q: Can I use peppermint oil instead of extract? A: Be very careful. Peppermint oil is much more concentrated. Use only 1–2 drops if you are substituting for ½ teaspoon of extract.
Q: Why are my brownies dry? A: This is usually caused by over-baking or over-measuring the flour. Always spoon your flour into the measuring cup and level it off rather than scooping directly from the bag.
Q: How do I store these? A: Store in an airtight container at room temperature for up to 4 days, or in the refrigerator for up to a week. They are fantastic when eaten cold!
Q: Can I make these in a 9×13 pan? A: Yes. Simply double the recipe and increase the baking time to 30–35 minutes.

Mint Chocolate Chip Brownies
Equipment
- Mixing bowl
- Spatula
- 8×8-inch baking pan
Ingredients
- ½ cup unsalted butter, melted
- 1 cup granulated sugar
- 1 large egg, room temperature
- 1 tsp vanilla extract
- ½ tsp peppermint extract
- ⅓ cup Dutch-process cocoa powder
- ½ cup all-purpose flour
- ¼ tsp salt
- 1 cup mint chocolate chips
- ½ cup semi-sweet chocolate chips (optional)
Instructions
- Preheat oven to 325°F (160°C). Grease or line an 8×8-inch square baking pan with parchment paper, leaving an overhang.
- In a large bowl, stir together melted butter and sugar. Add egg, vanilla extract, and peppermint extract. Whisk until smooth.
- Fold in cocoa powder, flour, and salt until just combined. Do not overmix.
- Stir in ¾ cup of the mint chocolate chips and optional semi-sweet chips. Reserve remaining mint chips for topping.
- Spread batter evenly into the pan. Sprinkle remaining mint chips on top. Bake 20–25 minutes, until a toothpick inserted shows moist crumbs.
- Cool completely in the pan before lifting out and slicing into squares.