Mint Chocolate Chip Brownies with Green Swirl Frosting
Mint Chocolate Chip Brownies with Green Swirl Frosting are a delightful treat that combines the rich decadence of brownies with refreshing mint flavors, finished off beautifully with a whimsical green frosting. When you take that first bite, the fudgy texture of the brownies melts in your mouth, while the mint chocolate chips add a burst of flavor that transports you to a world of sweet indulgence. Plus, that vibrant green swirled frosting not only looks festive but also tastes marvelous, making it the perfect addition for any occasion.
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I still remember the first time I baked these mint chocolate chip brownies. It was a sunny afternoon, and I had a sudden craving for something chocolatey yet refreshing. After some rummaging in my pantry, I decided to whip up these brownies. As I mixed and stirred, the scent wafted through the kitchen, filling the air with an inviting aroma. Each layer of flavors came together in a symphony of taste that still excites me today. Now, I’m excited to share this cherished recipe, hoping you will create your own memories with Mint Chocolate Chip Brownies with Green Swirl Frosting.
Why You’ll Love This Recipe
- Simple & Quick: Whip these brownies up in about an hour, making them perfect for spontaneous cravings or last-minute gatherings.
- Irresistible Flavor: The combination of rich chocolate and refreshing mint creates a delightful contrast that is hard to resist.
- Eye-Catching Appeal: Those swirls of green frosting not only elevate the presentation but also make these brownies stand out for any celebration.
- Flexible Serving: They’re perfect for parties, bake sales, or even just a cozy night in with friends and family.
- Diet-Friendly Options: If you’re looking for alternatives, feel free to switch out certain ingredients to cater to dietary restrictions.

Ingredients You’ll Need
- ½ cup unsalted butter: Adds moisture and richness; for a healthier option, you might substitute with coconut oil.
- ¼ cup dark chocolate unsweetened cocoa powder: Provides a deep chocolate flavor; Dutch-process cocoa will enhance the richness, but be mindful it can alter the pH.
- ½ cup vegetable oil: Keeps the brownies moist; you could also use melted coconut oil.
- 2 cups granulated sugar: Sweetens the batter; brown sugar could lend a chewier texture if preferred.
- 2 large eggs: Acts as a binder; make sure they’re at room temperature for best mixing.
- ¼ cup buttermilk: Adds moisture and a slight tang; plain yogurt or milk with a splash of vinegar can be great substitutes.
- 2 cups all-purpose flour: The base of the brownies; use a gluten-free blend if needed.
- 1 teaspoon baking soda: Helps the brownies rise; check expiration date to ensure effectiveness.
- ½ teaspoon kosher salt: Balances sweetness; sea salt as a substitute won’t alter flavor much.
- 1 cup Andes crème de menthe baking chips: Infuses a minty flavor; you can also use chopped mint chocolate for a similar effect.
- ½ cup unsalted butter, softened (for frosting): Needed for a creamy frosting texture; ensure it’s softened for easy mixing.
- ½ cup milk: Helps blend the frosting smoothly; for a thicker frosting, use less milk.
- 4 cups powdered sugar: Sweetens the frosting; start with less and adjust for sweetness as desired.
- ½ teaspoon peppermint extract: Boosts the mint flavor; be cautious with amounts as it can be potent.
- 1 drop green food coloring: Adds a fun pop of color; this is optional but recommended for visual appeal.
- ¾ cup mini semi-sweet chocolate chips: For an extra chocolatey crunch; you can swap for dark chocolate chips for a richer flavor.
How to Make Mint Chocolate Chip Brownies with Green Swirl Frosting
Preheat Oven: Set your oven to 400 degrees F and line a 13×9 baking dish with parchment paper. This will prevent sticking and aid in easy removal later.
Combine Brownie Ingredients: In a small saucepan over medium-high heat, mix the ½ cup unsalted butter, ¼ cup cocoa powder, and ½ cup vegetable oil. Bring this mixture to a boil, whisking continuously; this step enhances the chocolate flavor. Remove from heat once boiled.
Mix Wet and Dry Ingredients: In a large mixing bowl, blend 2 cups granulated sugar, 2 large eggs, and ¼ cup buttermilk until smooth. Slowly incorporate the chocolate mixture into this bowl, stirring gently to avoid overmixing. Then, fold in 2 cups all-purpose flour, 1 teaspoon baking soda, ½ teaspoon kosher salt, and finally, 1 cup Andes crème de menthe baking chips, ensuring a uniform blend.
Bake Brownies: Pour the brownie batter into your prepared baking dish. Bake for 20 minutes, or until a toothpick inserted in the center comes out clean. When you take them out, they should be fragrant and slightly firm to the touch. Allow cooling in the pan.
Prepare Green Swirl Frosting: Once the brownies are cool, get your electric mixer ready. Beat ½ cup softened unsalted butter for 3-4 minutes until it’s pale and fluffy. Gradually add ½ cup milk, 4 cups powdered sugar, ½ teaspoon peppermint extract, and your drop of green food coloring. Beat for an additional 3-5 minutes until the frosting is light and fluffy; if it feels too thick, a splash more milk can help. Finally, fold in ¾ cup mini semi-sweet chocolate chips.
Frost Brownies: Spread the green swirl frosting generously over the cooled brownies, ensuring an even layer. Then, refrigerate for about 2 hours to let the frosting set.
Slice and Enjoy: Once the frosting is firm, cut into squares and serve. The contrast of flavors and textures makes each bite a wonderful experience.

Storing & Reheating
To store your Mint Chocolate Chip Brownies with Green Swirl Frosting, keep them at room temperature in an airtight container for up to three days. If you want to extend their life, refrigerate them for up to a week in a well-sealed container. You can also freeze the brownies for up to three months; just allow them to cool completely before wrapping in plastic wrap and placing them in a freezer-safe bag. When you’re ready to enjoy them, pop them in the microwave for about 15-20 seconds to refresh their fudgy texture, although the frosting might lose some firmness.
Chef’s Helpful Tips
- Ensure precision by measuring your ingredients properly; too much flour can lead to dry brownies.
- Room temperature ingredients, especially the eggs and butter, mix notably better, leading to a smoother batter.
- For a chewier texture, underbake the brownies slightly, just until set, as they’ll continue to cook in the pan.
- If doubling this recipe, consider using two separate pans; overcrowding can cause uneven baking.
- Experiment! Adding crushed mint candy or adjusting the food coloring can make this recipe your own.
Mint Chocolate Chip Brownies with Green Swirl Frosting not only promise satisfaction through their taste and texture but also invite creativity and experimentation. The balance of flavors in these brownies resonates with the heart, and each time I whip up this recipe, I discover something new to love.
Recipe FAQs
What can I substitute for buttermilk?
You can easily replace buttermilk with a mixture of regular milk and vinegar—just add one tablespoon of vinegar to a measuring cup and fill it up to ¼ cup with milk. Let it sit for about 5 minutes to create a buttermilk substitute.
Can I use different baking chips?
Absolutely! You can switch out the Andes crème de menthe chips for regular chocolate chips or even white chocolate chips. Just be mindful that the mint flavor will change accordingly.
How do I know when the brownies are done?
To check for doneness, insert a toothpick into the center of the brownies. If it comes out clean or with a few moist crumbs, they are done. Keep in mind that the brownies will continue to bake slightly once removed from the oven.
Can I freeze the brownies after frosting?
While it’s best to freeze brownies without frosting, if you’ve already frosted them, ensure they are fully set, then wrap them tightly in plastic wrap and store in a freezer-safe container. Just know the texture of the frosting might change once thawed.
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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 topped with green swirl frosting offer a delicious blend of flavors and textures. They’re easy to make and perfect for gatherings, bringing smiles with each bite!
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 your oven to 400°F and line a 13×9 inch baking dish with parchment paper.
- In a small saucepan, combine the unsalted butter, cocoa powder, and vegetable oil. Bring to a boil while whisking, then remove from heat.
- In a mixing bowl, whisk together granulated sugar, eggs, and buttermilk. Gradually add the butter mixture without overmixing. Stir in flour, baking soda, and kosher salt until combined. Gently fold in the Andes baking chips.
- Pour the batter into the prepared baking dish and bake for 20 minutes. Let cool after removing from the oven.
- For the frosting, beat the softened butter in a bowl until pale, about 3-4 minutes. Mix in milk, powdered sugar, peppermint extract, and green food coloring, beating for another 3-5 minutes until light and fluffy. Adjust with more milk if necessary and fold in the mini chocolate chips.
- Spread the frosting over the cooled brownies and refrigerate for 2 hours to set. Cut into squares and enjoy!
Notes
Ensure the brownies are completely cool before applying the frosting for best results.
You can customize the level of mint flavor by adjusting the peppermint extract in the frosting.
Nutrition
- Serving Size: 1 brownie
- Calories: 220
- Sugar: 20g
- Sodium: 140mg
- Fat: 10g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 1g
- Protein: 2g
- Cholesterol: 25mg
