Mint Chocolate Chip Brownies with Green Swirl Frosting
Mint Chocolate Chip Brownies with Green Swirl Frosting are the ultimate indulgence that combines rich, fudgy brownie texture with a refreshing minty twist. The luscious cocoa base, studded with creamy Andes mint chips, is an experience all on its own. Topped with a delightful green swirl frosting that’s just as fun to make as it is to eat, these brownies are perfect for any occasion, whether you’re celebrating St. Patrick’s Day or simply satisfying that sweet tooth craving.
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I remember the first time I baked these Mint Chocolate Chip Brownies — the aroma of chocolate filling my kitchen felt like a warm embrace. Friends gathered around as the cool mint frosting made its way onto the still-warm brownies, and smiles erupted with every bite. This recipe is not just a treat; it’s a memory-maker, an invitation to share joy, laughter, and deliciousness. If you’re ready to bring that same delight into your home, let’s dive into this lovely recipe!
Why You’ll Love This Recipe
- Simple & Quick: Only 20 minutes of prep time and done in under an hour!
- Irresistible Flavor: Rich chocolate paired with refreshing mint creates a perfect flavor harmony.
- Eye-Catching Appeal: The vibrant green frosting makes these brownies stand out at any gathering.
- Flexible Serving: Perfect for parties, family dinners, or just enjoying with a cup of coffee.
- Diet-Friendly Options: Easy to adapt for gluten-free or dairy-free preferences.

Ingredients You’ll Need
- ½ cup unsalted butter: For a rich and creamy texture in the brownies. You can substitute with coconut oil if you want a dairy-free option.
- ¼ cup dark chocolate unsweetened cocoa powder: This brings out the deep chocolate flavor. Opt for high-quality cocoa for the best results.
- ½ cup vegetable oil: Adds moisture to the brownies and helps them stay soft. Can be replaced with melted coconut oil or almond oil.
- 2 cups granulated sugar: Sweetens the brownies perfectly. Agave or honey can be alternatives, but they may change the texture.
- 2 large eggs: Important for structure. Room temperature eggs yield better results.
- ¼ cup buttermilk: This makes the brownies tender. You can use milk mixed with a little vinegar as a substitute.
- 2 cups all-purpose flour: The base of the brownies. For a gluten-free option, consider a 1:1 gluten-free flour blend.
- 1 teaspoon baking soda: Helps the brownies rise slightly. Be sure your baking soda is fresh for optimal results.
- ½ teaspoon kosher salt: Enhances all flavors. Don’t skip it!
- 1 cup Andes crème de menthe baking chips: These little pieces are what makes these brownies truly minty. You can swap for peppermint baking chips if you can’t find them.
- ½ cup unsalted butter (softened): For the frosting, this creates a base for the luscious texture. Soften it at room temperature for easy mixing.
- ½ cup milk: Adds moisture to the frosting. Plant-based milk can work too.
- 4 cups powdered sugar: Essential for that sweet, fluffy frosting. Be sure to sift it for a smoother texture.
- ½ teaspoon peppermint extract: Gives that classic minty kick. Adjust to your taste.
- 1 drop green food coloring: For that festive green swirl in the frosting—feel free to use natural options if you prefer.
- ¾ cup mini semi-sweet chocolate chips: For added chocolate flavor in the frosting, these make each bite a joy.
How to Make Mint Chocolate Chip Brownies with Green Swirl Frosting
Preheat: Set your oven to 400°F and line a 13×9 baking dish with parchment paper, ensuring easy removal after baking.
Combine Ingredients: In a small saucepan over medium-high heat, combine ½ cup unsalted butter, ¼ cup dark chocolate unsweetened cocoa powder, and ½ cup vegetable oil. Bring this mixture to a boil, whisking continuously until it’s smooth, then remove it from heat.
Mix Wet Ingredients: In a large mixing bowl, combine 2 cups granulated sugar, 2 large eggs, and ¼ cup buttermilk. Slowly add in the butter mixture, being careful not to over mix. This keeps your brownies fudgy!
Incorporate Dry Ingredients: Gently fold in 2 cups all-purpose flour, 1 teaspoon baking soda, and ½ teaspoon kosher salt just until combined. Fold in 1 cup Andes crème de menthe baking chips for that minty goodness.
Bake: Pour the brownie batter into the prepared dish, making sure it’s evenly spread. Bake for 20 minutes or until the edges are just pulling from the side of the pan. They’ll still look slightly underbaked, which is perfect!
Cool Brownies: Once out of the oven, cool the brownies completely in the pan. This will allow them to set properly.
Whip Frosting: In a large mixing bowl, using an electric mixer, beat ½ cup softened butter for 3-4 minutes until it’s light and fluffy. Add in ½ cup milk, 4 cups powdered sugar, ½ teaspoon peppermint extract, and 1 drop of green food coloring. Beat for another 3-5 minutes until smooth and fluffy. If the frosting seems too thick, a splash more milk will help.
Add Chocolate Chips: Carefully fold in ¾ cup mini semi-sweet chocolate chips into the frosting for those delightful bursts of chocolate.
Frost Brownies: Once the brownies are cooled, spread the green frosting evenly on top. For a fun touch, you can swirl it around to create a marbled effect.
Set & Serve: Refrigerate the frosted brownies for about two hours, allowing the frosting to set. Cut into squares and enjoy every mouthful of those fantastic flavors!

Storing & Reheating
To keep your Mint Chocolate Chip Brownies with Green Swirl Frosting at their best, store them in an airtight container at room temperature for up to 3 days. For longer storage, place them in the fridge for up to a week. If you want to freeze them, wrap individual pieces tightly in plastic wrap and then place them in a freezer-safe bag for up to 3 months. When you’re ready to indulge again, simply thaw at room temperature or warm in the microwave for about 10-15 seconds until just soft.
Chef’s Helpful Tips
- Be careful not to overmix your brownie batter. This can lead to cakey brownies instead of fudgy ones.
- Room temperature eggs and softened butter mix better and create a smoother frosting.
- If your brownies seem too soft after baking, let them cool longer before frosting; they’ll firm up.
- Experiment with different mint chip varieties or add nuts for more texture!
- Make the brownies a day ahead, as the flavors deepen and enhance overnight.
Mint Chocolate Chip Brownies with Green Swirl Frosting are not just a dessert; they’re a celebration of flavor, texture, and a bit of fun. The combination of the rich chocolate brownie with the cool mint icing creates a delicious balance that will have everyone coming back for seconds. Feel free to tweak this recipe to make it your own because that’s what baking is all about! So, grab those ingredients, roll up your sleeves, and let your kitchen fill with sweet aromas. Enjoy the process, and don’t forget to share with friends!
Recipe FAQs
Can I use a different type of chocolate for the brownies?
Absolutely! If you prefer a milk chocolate brownie, feel free to substitute the cocoa powder or the Andes chips with milk chocolate alternatives. Just remember that using milk chocolate may alter the sweetness slightly.
How can I make these brownies gluten-free?
You can easily adapt the recipe by substituting all-purpose flour with a gluten-free flour mix. Make sure it includes a binder like xanthan gum to maintain the right texture, and you’re good to go!
Can I add other toppings or mix-ins?
Yes! Get creative by adding nuts, chocolate chunks, or even a drizzle of caramel atop the frosting. It’s all about personal preference!
How do I ensure the brownies are fudgy?
The key is to not overbake them. Keep an eye on them while they’re in the oven. When a toothpick inserted comes out with a few moist crumbs, they’re ready! Cooling them completely before cutting also helps retain moisture.
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📖 Recipe Card

Mint Chocolate Chip Brownies with Green Swirl Frosting
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Total Time: 1 hour
- Yield: 24 servings 1x
- Category: Desserts
- Method: Baking
- Cuisine: American
Description
These Mint Chocolate Chip Brownies with Green Swirl Frosting offer a delightful combination of rich chocolate and refreshing mint, featuring Andes baking chips and a creamy frosting. Perfect for any occasion, they are easy to make and sure to please anyone with a sweet tooth!
Ingredients
- ½ cup unsalted butter
- ¼ cup dark chocolate unsweetened cocoa powder
- ½ cup vegetable oil
- 2 cups granulated sugar
- 2 large eggs
- ¼ cup buttermilk
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- ½ teaspoon kosher salt
- 1 cup andes creme de menthe baking chips
- ½ cup unsalted butter softened
- ½ cup milk
- 4 cups powdered sugar
- ½ teaspoon peppermint extract
- 1 drop green food coloring
- ¾ cup mini semi-sweet chocolate chips
Instructions
- Preheat the oven to 400°F and line a 13×9 baking dish with parchment paper.
- In a small saucepan over medium-high heat, combine the butter, cocoa powder, and oil, bringing it to a boil while whisking continuously. Then remove from heat.
- In a large mixing bowl, mix together the granulated sugar, eggs, and buttermilk. Slowly stir in the butter mixture (without over mixing). Incorporate the flour, baking soda, and salt, stirring just until combined, then fold in Andes mints.
- Pour the mixture into the prepared dish and bake for 20 minutes. Let it cool after removing from the oven.
- Once cooled, prepare the frosting by beating the softened butter in a large mixing bowl with an electric mixer for 3-4 minutes until pale. Add the milk, powdered sugar, peppermint extract, and food coloring, beating for an additional 3-5 minutes until fluffy (add more milk if needed). Finally, fold in the chocolate chips.
- Spread the frosting over the cooled brownies and refrigerate for two hours until set. Cut into squares and enjoy.
Notes
If you prefer a stronger mint flavor, feel free to add more peppermint extract to the frosting.
Store the brownies in an airtight container to maintain their freshness.
These brownies are perfect for parties or holiday celebrations.
Nutrition
- Serving Size: 1 brownie
- Calories: 250
- Sugar: 25g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 37g
- Fiber: 1g
- Protein: 2g
- Cholesterol: 30mg
