Mint Chocolate Brownies | Easy St Patrick’s Day Fudgy Brownies
Mint Chocolate Brownies are the perfect indulgence for anyone craving a sweet, fudgy treat with a burst of refreshing mint. These brownies boast a rich and dense chocolate base, topped with a smooth mint frosting and a glossy chocolate ganache, making them a delightful dessert for any occasion. They are particularly fitting for St. Patrick’s Day, thanks to their vibrant green hue, yet they’re so delicious that you’ll want to whip them up year-round.
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The combination of deep chocolate flavor and lively mint creates a symphony of taste that’s both satisfying and refreshing. I remember the first time I had these brownies at a friend’s gathering; the moment I took a bite, I knew I had stumbled upon a true favorite. Easy to make and utterly irresistible, these Mint Chocolate Brownies will have everyone asking for the recipe—even the folks who say they don’t like brownies!
Why You’ll Love This Recipe
- Simple & Quick: With just 15 minutes of prep time, you can have these brownies in the oven fast.
- Irresistible Flavor: The fudgy chocolate paired with creamy mint frosting creates a mouthwatering experience.
- Eye-Catching Appeal: The vibrant green frosting makes them a festive treat for St. Patrick’s Day or any celebration.
- Flexible Serving: Perfect for dessert after dinner, sweet snacks, or even special occasions.
- Diet-Friendly Options: Easily adaptable for gluten-free or dairy-free requirements by swapping in alternative ingredients.

Ingredients You’ll Need
- ½ cup (113g) unsalted butter: Cut into 6-8 slices. This is crucial for a fudgy texture and rich flavor.
- 8 ounces (227g) semi-sweet chocolate: Coarsely chopped. The star ingredient for that deep chocolate taste.
- ¾ cup (150g) firmly packed brown sugar: Adds sweetness and moisture, contributing to the chewy texture.
- ¼ cup (50g) granulated sugar: Balances the flavors and provides a little extra sweetness.
- 3 large eggs: Room temperature preferred for better mixing.
- 1 teaspoon vanilla extract: Enhances all the flavors and adds warmth to the brownies.
- ¾ cup (90g) all-purpose flour: Be sure to measure properly for structure without being dry.
- ¼ teaspoon salt: Brings out the sweetness and flavor of the chocolate.
- ½ cup (113g) unsalted butter (softened): For the mint frosting, this creates a creamy and smooth texture.
- 2 cups (240g) powdered sugar: Sweetens the frosting substantially, giving it the right consistency.
- ¼ cup (60ml) milk or cream: Adds moisture and helps the frosting spread nicely.
- ½ to ¾ teaspoon peppermint extract: Provides the signature mint flavor; adjust based on preference.
- 2 drops green liquid or gel food coloring: Just for fun! Makes the frosting visually appealing.
- 1 cup (175g) semi-sweet chocolate chips: For the ganache topping, providing richness and texture.
- ⅔ cup (160ml) heavy cream: Used to melt into the chocolate chips for a luscious ganache.
How to Make Mint Chocolate Brownies | Easy St Patrick’s Day Fudgy Brownies
Preheat the oven: First, set your oven to 350ºF (177ºC). Line an 8″ or 9″ square baking pan with foil, making sure to leave some overhang for easy lifting later. Don’t forget to spray the foil with nonstick spray to prevent sticking!
Melt the chocolate: In a medium saucepan over medium heat, melt the ½ cup (113g) unsalted butter slices and 8 ounces (227g) chopped semi-sweet chocolate, stirring frequently until everything is smooth and melted. It’s best to let this mixture cool for about 15 minutes to avoid scrambling the eggs when added.
Mix in sugars: Whisk the ¾ cup (150g) brown sugar and ¼ cup (50g) granulated sugar into the cooled chocolate mixture until combined. This step is important to ensure an even sweetness throughout the brownies.
Add the eggs: Crack in the 3 large eggs one at a time. Whisk after each addition until the batter is smooth. Then, stir in the 1 teaspoon of vanilla extract.
Combine flour and salt: Gently add in the ¾ cup (90g) all-purpose flour and ¼ teaspoon salt, mixing just until everything is combined. Doing this step carefully ensures you maintain the brownies’ fudgy texture.
Bake the brownies: Pour the brownie batter into your prepared pan and bake for 25-30 minutes. Keep an eye on them—you want a toothpick inserted in the center to come out mostly clean. Once they’re done, allow them to cool completely before adding the frosting.
Prepare the mint frosting: In a large mixing bowl, beat the ½ cup (113g) softened unsalted butter on medium speed until creamy, which should take about 2 minutes. Then, with the mixer on low, gradually add the 2 cups (240g) powdered sugar, ½ to ¾ teaspoon peppermint extract, and the ¼ cup (60ml) milk or cream. If the frosting feels too thick, just add more milk.
Add food coloring: Once the mint frosting is smooth, add in 2 drops of green food coloring and increase the mixer speed to medium. Beat for about 3 minutes until the frosting is light and fluffy.
Make the ganache: Place the 1 cup (175g) semi-sweet chocolate chips in a small bowl. In a saucepan over medium heat, warm the ⅔ cup (160ml) heavy cream until it’s steaming, and then remove it from the heat. Pour the hot cream over the chocolate chips, whisking until smooth. Allow it to cool for at least 20 minutes.
Frost the brownies: When your brownie base has cooled completely, use a spatula to spread the mint frosting evenly across the top. This creates a nice layer and sets the stage for the ganache.
Top with ganache: Quickly pour the chocolate ganache over the mint layer. It’s okay if it spreads on its own, but feel free to gently guide it to reach the corners if needed.
Chill to set: Place the brownie pan in the refrigerator for at least 2 hours to set the ganache fully. This step will help achieve clean cuts later!
Slice and serve: When you’re ready to enjoy, lift the brownies out of the pan using the foil overhang. Place them on a cutting board and use a sharp knife to slice them into squares. Remember, wiping the knife between cuts helps keep those layers intact.

Storing & Reheating
These delicious Mint Chocolate Brownies can be stored at room temperature for up to 3 days in an airtight container. If you wish to keep them for longer, transfer them to the refrigerator where they can last up to a week. For even longer storage, these brownies freeze beautifully—up to 3 months in an airtight container. When ready to enjoy, just thaw them in the refrigerator overnight, and if desired, warm them slightly in the microwave to bring back that fudgy texture.
Chef’s Helpful Tips
- Avoid overmixing: When adding flour, mix just until combined to keep them fudgy.
- Room temperature ingredients: Ensure your eggs are at room temperature for better incorporation.
- Chill your ganache: Cooling is key for that perfect pour-over texture; don’t rush it!
- Experiment with extracts: Try different extracts if you’re feeling adventurous—like chocolate mint or vanilla.
- Cutting tips: Use a sharp knife; wiping it clean will prevent the ganache from smudging onto the frosting.
These Mint Chocolate Brownies are a delightful treat, combining the richness of chocolate with a refreshing touch of mint. They are not only easy to make but also incredibly satisfying to eat. I encourage you to try this recipe and even add your twist, like swirling in some extra chocolate chips or nuts for added texture. There’s something special about baking for yourself or others that makes every bite even sweeter. Enjoy these decadent brownies, and I promise they will be a hit, whether for St. Patrick’s Day or any day!
Recipe FAQs
Can I use dark chocolate instead of semi-sweet?
Absolutely! Using dark chocolate will yield a richer flavor. Just make sure it’s not too bitter, as that could overpower the mint.
How do I know when my brownies are done baking?
Check by inserting a toothpick; for fudgy brownies, you want it to come out mostly clean with a few moist crumbs. If it’s wet, give them another few minutes.
Can I make these brownies gluten-free?
Yes, simply substitute the all-purpose flour with a gluten-free flour blend that measures cup-for-cup!
How long should I let the brownies cool before adding frosting?
Make sure to let the brownies cool completely, which usually takes about 1-2 hours at room temperature, so that the frosting and ganache don’t melt when you spread them on top.
More Desserts & Appetizers Recipes
- Soft annd Fluffy Coconut Cloud Cake
- Raspberry Almond Thumbprint Cookies
- Brownie Pizza
- Carrot Cake Cookies
- 4-Ingredient Brownies
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📖 Recipe Card

Mint Chocolate Brownies | Easy St Patrick’s Day Fudgy Brownies
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
- Yield: 16 servings 1x
- Category: Desserts
- Method: Baking
- Cuisine: American
Description
These Mint Chocolate Brownies are a delightful treat perfect for any occasion. With a fudgy base, a refreshing mint frosting, and rich chocolate ganache, they create a unique flavor profile that is loved by all. Simple to prepare and ideal for gatherings, they are bound to impress.
Ingredients
- ½ cup (113g) unsalted butter cut into 6-8 slices
- 8 ounces (227g) semi-sweet chocolate coarsely chopped
- ¾ cup (150g) firmly packed brown sugar
- ¼ cup (50g) granulated sugar
- 3 large eggs room temperature preferred
- 1 teaspoon vanilla extract
- ¾ cup (90g) all-purpose flour be sure to measure properly
- ¼ teaspoon salt
- ½ cup (113g) unsalted butter softened to room temperature
- 2 cups (240g) powdered sugar
- ¼ cup (60ml) milk or cream
- ½ to ¾ teaspoon peppermint extract
- 2 drops green liquid or gel food coloring
- 1 cup (175g) semi-sweet chocolate chips
- ⅔ cup (160ml) heavy cream
Instructions
- Preheat the oven to 350ºF (177ºC). Prepare an 8" or 9" square baking pan by lining it with foil and applying nonstick spray.
- In a medium saucepan over medium heat, melt the butter and chopped chocolate together, stirring frequently until smooth. Allow it to cool for about 15 minutes.
- Whisk the sugars into the cooled chocolate mixture until well combined. Add the eggs one at a time, whisking thoroughly after each addition. Mix in the vanilla extract.
- Stir in the flour and salt gently until the batter is fully combined.
- Pour the brownie batter into the prepared pan, and bake for 25-30 minutes, or until a toothpick inserted in the center comes out mostly clean. Let the brownies cool completely before adding the frosting and ganache layers.
Notes
Make sure to measure the flour correctly for the ideal texture.
Let the brownies cool completely before adding any frosting to achieve the best results.
Adjust the amount of peppermint extract and food coloring to your taste.
Nutrition
- Serving Size: 1 brownie
- Calories: 210
- Sugar: 25g
- Sodium: 80mg
- Fat: 9g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 34g
- Fiber: 1g
- Protein: 2g
- Cholesterol: 40mg





