If you’re on the lookout for a dessert that perfectly balances the rich, fudgy goodness of brownies with a refreshing minty twist, look no further than these Grasshopper Brownie Bars. Inspired by the classic flavor combination of chocolate and mint, these bars are sure to impress both your friends and family. The layers of decadent chocolate brownie topped with a creamy mint filling create a delightful treat that’s perfect for any occasion. Let’s dive into the details of making these delicious Grasshopper Brownie Bars!
Why You’ll Keep Making It

These Grasshopper Brownie Bars are not just a feast for the eyes; they are a sensational treat that combines rich chocolate and refreshing mint. The fudgy brownie base is incredibly satisfying, while the creamy mint layer adds a fresh burst of flavor that will have you coming back for seconds. They are simple enough for a weeknight dessert yet impressive enough for entertaining. Once you taste these, you’ll find yourself making them time and time again!
What You’ll Gather
- 3/4 cups flour – This will provide structure to your brownie base.
- 1/2 teaspoon salt – A pinch of salt enhances the flavors.
- 1 tablespoon dark unsweetened cocoa powder – Adds an extra depth of chocolate flavor.
- 5 ounces good quality dark chocolate (60 to 72%) – Coarsely chopped for the brownie mixture.
- 1/2 cup (1 stick) butter – Necessary for a rich, fudgy texture.
- 3/4 cups sugar – Sweetens the brownies.
- 1/4 cup firmly packed light brown sugar – Adds moisture and a hint of caramel flavor.
- 3 large eggs – Provides structure and richness.
- 1 teaspoon vanilla extract – Enhances the overall flavor.
- 3/4 cups sugar – For the mint layer.
- 2 tablespoons flour – Helps to thicken the mint filling.
- 3/4 cups milk – Adds creaminess to the filling.
- 2 tablespoons heavy cream – For a luxurious texture in the mint layer.
- 1 1/2 sticks (3/4 cup) butter, softened but still cool – Creates a smooth consistency for the filling.
- 3 tablespoons creme de menthe – The star ingredient for that minty flavor.
- 1 teaspoon peppermint extract – Intensifies the minty sensation.
- 6 ounces good-quality dark chocolate (60 to 72%) – For the topping.
- 1 teaspoon light corn syrup – Gives the chocolate topping a nice sheen.
- 1/2 cup (1 stick) unsalted butter, softened, cut into cubes – Ensures the topping is smooth.
What You’ll Need (Gear)
- Mixing bowls – For combining your ingredients.
- Whisk – To mix the batter and filling.
- 9×13-inch baking pan – Ideal for baking the brownie bars.
- Parchment paper – Helps with easy removal of the bars from the pan.
- Rubber spatula – For spreading the layers evenly.
- Double boiler or microwave-safe bowl – For melting chocolate.
Cook Grasshopper Brownie Bars Like This

Step 1: Prepare Your Baking Pan
Preheat your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving some overhang on the sides to help lift out the brownies later.
Step 2: Make the Brownie Batter
In a medium mixing bowl, whisk together the flour, salt, and cocoa powder. In a double boiler or microwave-safe bowl, melt the coarsely chopped dark chocolate and butter together until smooth. Stir in the sugars until well combined.
Step 3: Add the Eggs and Vanilla
Once the chocolate mixture has cooled slightly, whisk in the eggs, one at a time, followed by the vanilla extract. Mix until the batter is shiny and smooth.
Step 4: Combine Wet and Dry Ingredients
Gradually add the flour mixture to the chocolate mixture, stirring until just combined. Do not overmix. Pour the brownie batter into the prepared baking pan, spreading it out evenly.
Step 5: Bake the Brownies
Bake in the preheated oven for about 20-25 minutes or until a toothpick inserted into the center comes out with a few moist crumbs. Let the brownies cool completely in the pan on a wire rack.
Step 6: Prepare the Mint Filling
In a mixing bowl, combine the sugar, flour, milk, and heavy cream. Mix until smooth. In another bowl, beat the softened butter, creme de menthe, and peppermint extract together until creamy. Gradually add the milk mixture to the butter, beating until well combined.
Step 7: Spread the Mint Layer
Once the brownies are completely cool, spread the mint filling evenly over the top. Smooth it out with a rubber spatula.
Step 8: Make the Chocolate Topping
In a double boiler or microwave-safe bowl, melt the dark chocolate along with the light corn syrup and butter until smooth. Stir until fully combined and glossy.
Step 9: Pour and Spread the Topping
Pour the chocolate topping over the mint layer, spreading it out evenly. Allow the bars to set in the refrigerator for at least 2 hours.
Step 10: Slice and Serve
Once set, lift the bars out of the pan using the parchment paper overhang. Slice into squares or bars and serve chilled or at room temperature.
Fit It to Your Goals

- Gluten-Free Option: Substitute the flour with a 1:1 gluten-free baking blend.
- Lower Sugar: Use a sugar alternative like erythritol or monk fruit sweetener.
- Dairy-Free: Use non-dairy butter and milk alternatives.
- Minty Variations: Add crushed mint candies or use different flavored extracts.
Errors to Dodge
- Overbaking the brownies will lead to a dry texture. Keep an eye on them!
- Not allowing the brownies to cool completely before adding the mint layer can cause it to melt.
- Forgetting to line the baking pan can make removing the brownies a sticky situation.
- Using low-quality chocolate can affect the overall flavor; always choose good quality chocolate.
Storing, Freezing & Reheating
The Grasshopper Brownie Bars can be stored in an airtight container in the refrigerator for up to one week. If you’d like to freeze them, wrap individual bars tightly in plastic wrap and place them in a freezer-safe bag. They can be frozen for up to three months. To enjoy, simply thaw in the refrigerator overnight or let them sit at room temperature for a bit before indulging.
Reader Q&A
Can I use milk chocolate instead of dark chocolate for the brownies?
While you can use milk chocolate, it may result in a sweeter and less intense flavor. Dark chocolate is recommended for a more balanced taste.
What can I substitute for creme de menthe?
If you don’t have creme de menthe, you can use a mix of peppermint extract and a bit of sugar or honey to replicate the minty flavor.
How do I know when the brownies are done baking?
Check for doneness by inserting a toothpick into the center; it should come out with a few moist crumbs rather than wet batter.
Can I make these bars ahead of time?
Absolutely! These bars can be made a day in advance and stored in the refrigerator. They actually taste even better after chilling for a while.
More Recipes You’ll Love
- Double Chocolate Espresso Brownies – Indulge in a rich chocolate experience.
- Fluffy Cream Cheese Brownie Cups – A delightful twist on the classic brownie.
Let’s Eat
These Grasshopper Brownie Bars are a delightful combination of flavors and textures that will leave you craving more. Whether you’re serving them at a party or enjoying them as a late-night treat, they are sure to impress. So gather your ingredients, follow the steps, and treat yourself to these delectable bars!

Grasshopper Brownie Bars
Ingredients
For the Brownies:
- 3/4 cup flour
- 1/2 teaspoon salt
- 1 tablespoon dark unsweetened cocoa powder
- 5 ounces good quality dark chocolate (60 to 72%) coarsely chopped
- 1/2 cup butter 1 stick
- 3/4 cup sugar
- 1/4 cup light brown sugar firmly packed
- 3 large eggs
- 1 teaspoon vanilla extract
For the Mint Filling:
- 3/4 cup sugar
- 2 tablespoons flour
- 3/4 cup milk
- 2 tablespoons heavy cream
- 1 1/2 sticks butter softened but still cool
- 3 tablespoons creme de menthe
- 1 teaspoon peppermint extract
For the Chocolate Topping:
- 6 ounces good-quality dark chocolate (60 to 72%)
- 1 teaspoon light corn syrup
- 1/2 cup unsalted butter softened, cut into cubes
Instructions
Instructions:
- Preheat your oven to 350°F (175°C). Line a 9x13-inch baking pan with parchment paper, leaving some overhang on the sides.
- In a medium mixing bowl, whisk together the flour, salt, and cocoa powder. In a double boiler or microwave-safe bowl, melt the coarsely chopped dark chocolate and butter together until smooth. Stir in the sugars until well combined.
- Once the chocolate mixture has cooled slightly, whisk in the eggs, one at a time, followed by the vanilla extract. Mix until the batter is shiny and smooth.
- Gradually add the flour mixture to the chocolate mixture, stirring until just combined. Do not overmix. Pour the brownie batter into the prepared baking pan, spreading it out evenly.
- Bake in the preheated oven for about 20-25 minutes or until a toothpick inserted into the center comes out with a few moist crumbs. Let the brownies cool completely in the pan on a wire rack.
- In a mixing bowl, combine the sugar, flour, milk, and heavy cream. Mix until smooth. In another bowl, beat the softened butter, creme de menthe, and peppermint extract together until creamy. Gradually add the milk mixture to the butter, beating until well combined.
- Once the brownies are completely cool, spread the mint filling evenly over the top. Smooth it out with a rubber spatula.
- In a double boiler or microwave-safe bowl, melt the dark chocolate along with the light corn syrup and butter until smooth. Stir until fully combined and glossy.
- Pour the chocolate topping over the mint layer, spreading it out evenly. Allow the bars to set in the refrigerator for at least 2 hours.
- Once set, lift the bars out of the pan using the parchment paper overhang. Slice into squares or bars and serve chilled or at room temperature.
Equipment
- Mixing bowls
- Whisk
- 9x13 inch Baking Pan
- Parchment Paper
- Rubber spatula
- Double boiler or microwave-safe bowl
Notes
- Store in an airtight container in the refrigerator for up to one week.
- For freezing, wrap individual bars tightly in plastic wrap and place in a freezer-safe bag.
- Thaw frozen bars in the refrigerator overnight for best results.
