Mint Chocolate Chip Brownies with Green Swirl Frosting are a delightful twist on your classic brownie. With their fudgy texture, rich chocolate flavor, and bursts of minty freshness, these brownies are as delicious as they are eye-catching. The lush green frosting adds a playful touch that makes them perfect for every occasion, from cozy family gatherings to holiday parties. Each bite is a perfect balance of sweetness, mint, and chocolate, making it nearly impossible to resist grabbing another piece.

I first stumbled upon this recipe during a chilly winter day when the craving for something sweet and refreshingly minty struck. I experimented in my kitchen, and what I ended up with was nothing short of magical. The combination of the chewy brownie base with the creamy, vibrant frosting speaks to everyone’s inner child. Not only are these Mint Chocolate Chip Brownies fun to make, but they become a showstopper when you serve them to friends and family. You’re going to love how easy they are—and how impressed everyone will be!
Table of Contents
Why You’ll Love This Recipe
- Simple & Quick: Takes just 20 minutes to prep and 40 minutes to bake!
- Irresistible Flavor: Enjoy the rich chocolate brownie topped with creamy mint frosting that’s bursting with flavor.
- Eye-Catching Appeal: The vibrant green swirl frosting makes these brownies a perfect treat for any celebration.
- Flexible Serving: Ideal for snacks, office treats, or even as dessert after a family dinner.
- Diet-Friendly Options: Easily swap out ingredients to make these gluten-free or dairy-free!

Ingredients You’ll Need
- ½ cup unsalted butter: Essential for richness and moisture; you can substitute with coconut oil for a dairy-free option.
- ¼ cup dark chocolate unsweetened cocoa powder: This contributes deep chocolate flavor; Dutch-processed cocoa also works well.
- ½ cup vegetable oil: Keeps the brownies moist; can be replaced with canola or melted coconut oil.
- 2 cups granulated sugar: Balances the chocolate and adds sweetness; using half brown sugar can enhance flavor.
- 2 large eggs: Provides structure; if needed, use flaxseed eggs for a vegan version.
- ¼ cup buttermilk: Adds tenderness; substitute with plain yogurt or non-dairy milk mixed with lemon juice.
- 2 cups all-purpose flour: The base of the brownies; for gluten-free versions, use a gluten-free flour blend.
- 1 teaspoon baking soda: Helps the brownies rise; baking powder can be used as an alternative.
- ½ teaspoon kosher salt: Enhances all the flavors; regular salt works too!
- 1 cup Andes crème de menthe baking chips: These add bursts of minty flavor; you can use chocolate chips if unavailable.
- ½ cup unsalted butter (for frosting): Essential for a smooth, creamy texture; softened is best.
- ½ cup milk: Helps achieve the right consistency; use almond milk for a dairy-free option.
- 4 cups powdered sugar: Sweetens and thickens the frosting; make sure to sift it for smoothness.
- ½ teaspoon peppermint extract: Enhances the mint flavor; use natural peppermint oil for a more intense taste.
- 1 drop green food coloring: Just a little is needed to create a vibrant frosting; you may omit if you prefer a plain look.
- ¾ cup mini semi-sweet chocolate chips: Adds chocolatey goodness to the frosting; feel free to skip if you prefer!
How to Make Mint Chocolate Chip Brownies with Green Swirl Frosting
Preheat Oven: Set your oven to 400°F and prepare a 13×9-inch baking dish by lining it with parchment paper for easy removal.
Melt 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. Constantly whisk until it comes to a boil and then remove from heat.
Mix Batter: In a large mixing bowl, whisk together 2 cups granulated sugar, 2 large eggs, and ¼ cup buttermilk until well combined. Slowly pour in the butter mixture—just stir enough to mix.
Combine Dry Ingredients: Next, add 2 cups all-purpose flour, 1 teaspoon baking soda, and ½ teaspoon kosher salt to the bowl. Gently fold these dry ingredients in until just combined; avoid overmixing. Then, fold in the 1 cup Andes crème de menthe baking chips for that delightful minty goodness.
Bake Brownies: Pour the brownie batter into your prepared dish, spreading it evenly. Bake for 20 minutes, or until a toothpick inserted into the center comes out clean. Once baked, set the dish aside to cool.
Prepare Frosting: In a large mixing bowl, beat ½ cup softened unsalted butter with an electric mixer for about 3-4 minutes until it’s light and creamy. Gradually mix in ½ cup milk, 4 cups powdered sugar, ½ teaspoon peppermint extract, and your drop of green food coloring, continuing to beat until the frosting is airy and fluffy. If your frosting seems too thick, feel free to add a splash more milk.
Finish Brownies: Gently fold in ¾ cup mini semi-sweet chocolate chips to your frosting before spreading it generously over the cooled brownies. To let the flavors meld and the frosting set, refrigerate for at least 2 hours.
Slice and Serve: Cut into squares and enjoy your beautiful Mint Chocolate Chip Brownies with Green Swirl Frosting!

Storing & Reheating
Store any leftover brownies at room temperature in an airtight container for up to 3 days. For longer storage, keep them in the refrigerator for a week, ensuring they’re well-sealed to prevent drying out. You can also freeze individual brownies wrapped tightly for up to 3 months. When you’re ready to indulge, simply thaw at room temperature or reheat in the microwave for about 10-15 seconds to revive that fudgy texture!
Chef’s Helpful Tips
- Ensure the butter for your brownie layer is melted but not boiling to avoid a greasy texture.
- Let your brownies cool completely before frosting to prevent the icing from melting.
- If your frosting seems too sweet, adding a pinch of salt can help balance it out.
- Want an extra minty flavor? Use mint extract in the brownie batter as well as in the frosting.
- Make these brownies ahead of time for parties; they only get better as the flavors blend!
These Mint Chocolate Chip Brownies with Green Swirl Frosting are undoubtedly a treat you won’t forget. Their blend of rich chocolate and mint sets them apart from the average brownie, ensuring they’re a hit with family and friends. You can easily play around with the frosting colors and flavors to match any occasion.
So, roll up your sleeves, gather your ingredients, and treat yourself to this sweet indulgence! You’ll find they make any day feel like a special occasion. Enjoy these delightful brownies, and feel free to share them with someone special too!
Recipe FAQs
Can I make these brownies ahead of time?
Absolutely! You can prepare the brownies and frost them one to two days in advance. Just store them in an airtight container in the fridge until you’re ready to serve.
What can I use instead of eggs?
If you’re looking to make a vegan version, substituting 2 flaxseed eggs (2 tablespoons of ground flaxseed mixed with 6 tablespoons of water, set for 10 minutes) works perfectly in this recipe.
Can I freeze these brownies?
Yes! After they’ve cooled and been frosted, wrap them tightly in plastic wrap or aluminum foil, then place them in a freezer-safe container for up to 3 months.
How do I adjust the sweetness of the frosting?
If the frosting is too sweet for your liking, simply add a tiny pinch of salt to balance out the flavors. You can also reduce the amount of powdered sugar slightly while keeping the milk consistent for the right texture.
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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 are a delightful blend of rich chocolate and refreshing mint. Perfect for any occasion, this simple recipe will impress your friends and family with its luscious flavor and vibrant presentation.
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 oven to 400°F and line a 13×9 baking dish with parchment paper.
- In a small saucepan over medium-high heat, combine butter, cocoa powder, and oil. Bring to a boil while whisking continuously, then remove from heat.
- In a large mixing bowl, mix together granulated sugar, eggs, and buttermilk. Gradually stir in the butter mixture without overmixing. Add flour, baking soda, and salt, stirring just until combined, then fold in the Andes mints.
- Pour the mixture into the prepared baking dish and bake for 20 minutes. Remove from oven and let cool.
- For the frosting, in a large bowl, beat softened butter with an electric mixer for 3-4 minutes until pale. Add milk, powdered sugar, peppermint extract, and food coloring, then beat for another 3-5 minutes until light and fluffy, adding more milk if necessary. Gently fold in chocolate chips.
- Spread the frosting over the cooled brownies. Refrigerate for two hours to set, then cut and enjoy.
Notes
Make sure the brownies are completely cooled before adding the frosting for the best texture.
Feel free to adjust the amount of green food coloring to achieve your desired shade.
Store any leftovers in an airtight container in the refrigerator.
Nutrition
- Serving Size: 1 brownie
- Calories: 320
- Sugar: 30g
- Sodium: 180mg
- Fat: 17g
- Saturated Fat: 7g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 42g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 30mg

