Mint Brownies

March 8, 2025

If you’ve ever had a BYU Mint Brownie, you know why it’s legendary. These rich, fudgy brownies topped with a smooth, creamy mint frosting and a decadent chocolate glaze are an absolute dream. The perfect balance of chocolate and mint makes them an irresistible treat, and now you can recreate them at home with this easy copycat recipe!

Mint brownie with a bite taken out of it on napkins.

I graduated from Brigham Young University and one of the iconic desserts on campus are the mint brownies. You’ll see them in every on-campus bakery and at every sporting event! It’s a legendary treat and one I couldn’t resist recreating.

Ingredients You Need for Mint Brownies

Here’s a quick list of the ingredient you’ll need for the brownies. Exact measurements are listed in the recipe card below.

  • All-purpose flour
  • Good quality dark chocolate cocoa powder, I only use THIS
  • Salt
  • Unsalted butter
  • Bittersweet chocolate chips
  • Brown sugar
  • Eggs
  • Vanilla extract
  • Powdered sugar
  • Mint extract (I like using the Peppermint Emulsion from LorAnn Oils)
  • Heavy whipping cream
  • Food coloring (optional)
A batch of mint brownies on a cutting board with one slice removed to the side.

How to Make Mint Brownies From Scratch

Step 1: Prepare the Brownies

  1. Preheat your oven to 350°F and grease a 9×13-inch baking pan.
  2. In a medium-size mixing bowl, whisk together the flour, cocoa powder and salt. Set aside.
  3. Next, in a medium size saucepan, melt the butter and the bittersweet chocolate chips until smooth. Remove from the heat and allow to cool for about 5 minutes.
  4. Once the mixture has cooled slightly, add the brown sugar to the butter and stir until smooth. Add the eggs, one at a time, stirring well between each addition. Stir in the vanilla.
  5. Add the flour mixture and stir until no streaks of flour remain.
  6. Pour the batter into the prepared pan. Bake the brownies for 25 to 30 minutes.
  7. Remove the pan from the oven and allow the brownies to cool completely before adding frosting and ganache.
A stack of three mint brownies on a green four leaf clover plate.

Step 2: Make the Mint Frosting

  1. In a mixing bowl, beat the butter until smooth.
  2. Gradually add the powdered sugar and heavy whipping cream, and beat until fluffy.
  3. Stir in the peppermint or mint extract and a couple drops green food coloring, mixing until the color is evenly distributed.
  4. Spread the frosting over the cooled brownies and place them in the fridge to set for 20-30 minutes.

Step 3: Prepare the Chocolate Ganach

  1. In a microwave-safe bowl, combine the chocolate chips and butter.
  2. Microwave in 30-second intervals, stirring each time, until smooth.
  3. Let the glaze cool slightly before pouring it over the chilled mint frosting.
  4. Spread the glaze evenly and return the brownies to the fridge for about 30 minutes to allow the chocolate to set.
Three mint brownies in a stack on a green paper plate.

Step 4: Slice and Enjoy!

Once the chocolate glaze has set, slice the brownies into squares and serve. These brownies are even better the next day when the flavors have had time to meld. Store them in an airtight container in the fridge for up to 5 days.

More Recipes You’ll Love to Bake

Mint brownie with a bite taken out of it on napkins.

Mint Brownies

No ratings yet
Delicious chewy brownies with mint frosting and chocolate ganache.

Ingredients
  

For the Brownies

  • 1 1/2 cups (180 g) all-purpose flour
  • 3/4 cup (88.5 g) good quality dark chocolate cocoa powder
  • 1 teaspoon (6 g) salt
  • 1 cup (226 g) unsalted butter
  • 1 cup (180 g) bittersweet chocolate chips
  • 2 cups (440 g) light brown sugar, packed
  • 4 eggs
  • 2 teaspoons (8.4 g) vanilla extract

For the Mint Frosting

  • 1/2 cup (113 g) unsalted butter
  • 1 1/2 cups (187.5 g) powdered sugar, measured then sifted
  • 1-2 tablespoon heavy whipping cream
  • 1 teaspoon Peppermint or mint extract, I use the Peppermint Emulsion by LorAnn
  • 1-2 drops green food coloring, optional

For the Chocolate Ganache

  • 1 cup (170 g) semi-sweet or bittersweet chocolate chips
  • 6 tablespoons unsalted butter

Instructions
 

For the Brownies

  • Preheat your oven to 350 degrees F. Spray a 9" x 13" baking dish with nonstick spray. Set aside.
  • In a medium size mixing bowl, sift together the flour, cocoa powder, and salt. Set aside.
  • In a medium size saucepan, melt the butter and the bittersweet chocolate chips until smooth. Remove from the heat and allow to cool for about 5 minutes.
  • Add the brown sugar to the butter and stir until smooth.
  • Add the eggs, one at a time, stirring well between each addition.
  • Stir in the vanilla.
  • Add the flour mixture and stir until no streaks of flour remain.
  • Pour the batter into the prepared pan.
  • Bake the brownies for 25 to 30 minutes.
  • Remove the pan from the oven and allow the brownies to cool completely before adding the mint frosting and chocolate ganache.

For the Mint Frosting

  • In a mixing bowl, beat the butter until smooth.
  • Gradually add the powdered sugar and heavy whipping cream, and beat until fluffy.
  • Stir in the peppermint or mint extract and a couple drops green food coloring, mixing until the color is evenly distributed.
  • Spread the frosting over the cooled brownies and place them in the fridge to set for 20-30 minutes.

For the Chocolate Ganache

  • In a microwave-safe bowl, combine the chocolate chips and butter. Microwave in 30-second intervals, stirring each time, until smooth.
  • Let the ganache cool slightly before pouring it over the chilled mint frosting.
  • Spread the glaze evenly and return the brownies to the fridge for about 30 minutes to allow the chocolate to set.
    Makes 15-20 brownies.
Course: Dessert
Cuisine: Brownies
Keyword: Brownies, Mint Brownies

Join the Conversation

  1. Can’t wait to try this recipe for coworkers this St Patrick’s Day – do they have to be stored in the fridge?

    1. If you’re storing them for more than a few days, I would freeze them to stay fresh, but they can be at room temp for a day or so too.

  2. These look like perfection! Do you think they would freeze well.

    1. Yes they do! I have some in the freezer now!

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating




Like
Close
Close