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Fudgy Mint Chocolate Brownies

As seen in: From Bread to Pastries and Everything in Between

These triple-layer mint brownies combine a rich fudgy chocolate base with a smooth peppermint filling and chocolate topping. The brownie layer uses melted unsweetened chocolate and butter for an intensely chocolatey foundation. Once cooled, it's topped with a mint layer made from butter, powdered sugar, milk, and peppermint extract with a hint of green coloring. The final chocolate drizzle sets into a thin, delicate shell. Refrigeration between layers ensures perfect texture and clean cuts. Best served chilled, these brownies store well in the refrigerator for a week or can be frozen for longer keeping.

A woman named Sophie is smiling and holding a plate of food.
Created By Sophie
Last updated on Tue, 29 Apr 2025 13:21:19 GMT
A square piece of chocolate cake with a mint leaf on top. Save Pin
A square piece of chocolate cake with a mint leaf on top. | sophietable.com

These mint brownies have been a showstopper dessert in my house for years, combining the classic fudgy texture of brownies with a refreshing mint layer and glossy chocolate topping that creates an irresistible Andes mint-inspired treat.

I first made these brownies for a holiday party where they disappeared within minutes. The vibrant green mint layer always brings a smile to guests' faces, and I've been asked for the recipe countless times since.

Ingredients

For The Brownies

  • Unsalted butter creates a rich, moist base for the brownies
  • Unsweetened bakers chocolate provides deep chocolate flavor without excessive sweetness
  • Room temperature eggs for proper incorporation and better rise
  • Vanilla extract enhances the chocolate notes
  • Granulated sugar balances the unsweetened chocolate
  • Whole wheat pastry flour adds a subtle nuttiness while keeping brownies tender
  • All-purpose flour provides structure

For The Mint Layer

  • Softened butter helps create a smooth, creamy texture
  • Powdered sugar dissolves completely for a silky mint frosting
  • Milk thins the mixture to spreadable consistency
  • Pure peppermint extract gives authentic mint flavor without tasting artificial
  • Green food coloring creates the signature look but can be omitted if preferred

For The Chocolate Topping

  • Unsweetened chocolate creates a rich finish that balances the sweet mint layer
  • Unsalted butter helps the topping spread easily and adds shine

Step-by-Step Instructions

Prepare the Pan
Heat your oven to 350°F and thoroughly grease your 8×8 pan. I prefer using butter for greasing as it adds flavor and ensures perfect removal. Make sure to get into the corners where brownies tend to stick.
Create the Brownie Base
Set up a double boiler by placing a heat-proof bowl over simmering water without letting the bowl touch the water surface. This gentle heat prevents scorching the chocolate. Melt butter and chocolate together, stirring frequently until completely smooth. This mixture must cool completely before adding eggs to prevent scrambling them.
Build the Batter
Add eggs one at a time, allowing each to fully incorporate before adding the next. This creates proper emulsion for a fudgy texture. Beat in vanilla and sugar until the mixture becomes slightly lighter in color. Gently fold in both flours just until combined to avoid developing gluten which would make brownies tough.
Bake to Perfection
Spread the batter evenly in your prepared pan, taking time to push it into corners for uniform thickness. Bake until a toothpick comes out clean but not completely dry. Overbaking is the enemy of fudgy brownies. The middle should appear set but still have moisture. Cool completely before adding the mint layer.
Create the Mint Layer
Beat softened butter and powdered sugar until light and fluffy, about 2 minutes. Add milk and peppermint extract gradually, tasting as you go to achieve your preferred mint intensity. Add food coloring drop by drop until you reach the desired shade of green. Spread this mixture in an even layer over cooled brownies and refrigerate until firm to the touch.
Apply the Chocolate Topping
Gently melt chocolate and butter together until completely smooth. Pour over the chilled mint layer and quickly spread into a thin, even coating. This works best when the mint layer is thoroughly chilled to prevent the layers from mixing. Refrigerate again to set the chocolate before cutting.
A stack of three brownies with mint leaves on top. Save Pin
A stack of three brownies with mint leaves on top. | sophietable.com

The peppermint extract quality makes all the difference in these brownies. I once used an artificial version and immediately regretted it. Pure peppermint extract gives that authentic cooling sensation that makes these brownies extraordinary.

The Secret to Perfect Layers

Many people rush the chilling process between layers, which leads to messy, mixed results. Each layer needs time to set properly before adding the next. I refrigerate the brownie base for at least 30 minutes before adding the mint layer, then another 30 minutes before the chocolate topping. This patience creates those distinct, beautiful layers that make these brownies so impressive.

Serving Suggestions

While these brownies are perfect on their own, they transform into an elegant dessert when served with a scoop of vanilla ice cream. For special occasions, I garnish with fresh mint leaves and a light dusting of powdered sugar. These brownies pair wonderfully with coffee or hot chocolate, with the mint cutting through the richness perfectly.

Variations to Try

The basic structure of these brownies opens up possibilities for customization. Replace the mint with orange extract and orange food coloring for chocolate-orange brownies. During the holidays, I sometimes add a drop of peppermint oil to the chocolate topping for extra mint intensity. White chocolate can be substituted for the top layer for a striking color contrast against the green mint layer.

A plate of brownies with mint. Save Pin
A plate of brownies with mint. | sophietable.com

Commonly Asked Questions

→ Can I use regular all-purpose flour instead of whole wheat pastry flour?

Yes, the recipe specifically notes you can substitute additional all-purpose flour for the whole wheat pastry flour in equal amounts. The whole wheat pastry flour adds a subtle nuttiness, but the brownies will be equally delicious using only all-purpose flour.

→ How do I know when the brownies are properly baked?

The brownies are done when the middle appears set and a toothpick inserted in the center comes out clean, typically after 20-25 minutes of baking. Be careful not to overbake as this can dry out the fudgy texture.

→ Can I omit the green food coloring?

Absolutely! The green food coloring is purely for visual appeal to indicate the mint flavor. Omitting it won't affect the taste at all, though the middle layer will remain white instead of mint-green.

→ How long should I refrigerate between adding each layer?

Refrigerate the mint layer until it feels firm to the touch, typically 30-45 minutes. After adding the chocolate topping, refrigerate again until completely set, about 1 hour. Proper chilling ensures clean cuts and distinct layers.

→ Why do my brownies crack when I cut them?

If the chocolate topping cracks during cutting, try letting the brownies sit at room temperature for 5-10 minutes before slicing. You can also warm your knife under hot water, dry it, and then cut for cleaner slices through the chocolate layer.

→ Can I use mint extract instead of peppermint extract?

While you can substitute mint extract, be aware that mint extract often contains both peppermint and spearmint oils, which will give a slightly different flavor profile than pure peppermint. Start with a smaller amount (around 1/2 teaspoon) and adjust to taste.

Triple-Layer Andes Mint Brownies

Fudgy chocolate brownies with creamy mint filling and chocolate glaze - a decadent three-layer dessert reminiscent of Andes mints.

Preparation Time
30 Minutes
Cooking Duration
20 Minutes
Overall Time
50 Minutes
Created By: Sophie

Recipe Type: Baking

Skill Level: Medium

Cuisine Type: American

Portion Size: 16 Number of Servings (16 brownies)

Diet Preferences: Vegetarian-Friendly

What You'll Need

→ FOR THE BROWNIES

01 ¾ cup unsalted butter (12 tablespoons)
02 3 ounces unsweetened bakers chocolate (1-ounce squares)
03 3 large eggs at room temperature
04 ½ teaspoon pure vanilla extract
05 1 ½ cups granulated sugar
06 ½ cup whole wheat pastry flour or additional all-purpose flour
07 ¼ cup all-purpose flour

→ FOR THE MINT LAYER

08 3 tablespoons unsalted butter softened
09 1 ½ cups powdered sugar
10 1 ½ tablespoons milk
11 ¾ teaspoon pure peppermint extract
12 2 drops green food coloring

→ FOR THE CHOCOLATE TOPPING

13 1 ½ ounces unsweetened chocolate (1-ounce squares)
14 1 ½ tablespoons unsalted butter

Step-by-Step Directions

Step 01

Place rack in the center of your oven and preheat the oven to 350 degrees F. Grease an 8×8-inch pan and set aside.

Step 02

In a heat-proof bowl set atop a pan of simmering water so that the bottom of the bowl does not touch the water's surface, melt the 12 tablespoons butter and 3 ounces chocolate together. Stir frequently and watch carefully so the chocolate doesn't burn. When the chocolate has nearly melted, remove from heat and stir until smooth. Set aside and let cool completely.

Step 03

Once the chocolate has cooled, add the eggs one at a time, beating well after each. Add the vanilla extract and sugar, beating thoroughly. Add the whole wheat pastry flour and all-purpose flour, then beat until blended. Spread the batter evenly in the prepared pan and bake for 20-25 minutes, until the middle appears set and a toothpick inserted in the center comes out clean. Let cool completely.

Step 04

In a medium bowl, beat the 3 tablespoons of softened butter and powdered sugar together. Add the milk and peppermint, beating until smooth, then beat in the food coloring. Spread over the cooled brownie base and refrigerate until firm.

Step 05

Melt the 1 1/2 ounces chocolate and 1 1/2 tablespoons butter together, stirring until smooth. Drizzle over the chilled mint layer, then spread with a spatula, gently covering the surface with a very thin layer. Place in the refrigerator to set, then cut into squares. The brownies will cut more easily (and are delicious) when chilled. Enjoy with a large glass of milk.

Helpful Notes

  1. Store leftover brownies in an airtight storage container in the refrigerator for up to 1 week.
  2. Wrap brownies tightly and freeze them in an airtight freezer-safe storage container for up to 3 months. Thaw and enjoy as desired.

Recommended Tools

  • 8×8-inch baking pan
  • Heat-proof bowl
  • Saucepan
  • Mixing bowls
  • Electric mixer
  • Spatula

Allergen Information

Always review ingredients for any allergens and consult a healthcare provider with any concerns.
  • Contains eggs
  • Contains dairy
  • Contains wheat/gluten

Nutritional Information (Per Serving)

These details are estimates and shouldn't be considered professional health advice.
  • Calories: 306
  • Fat Content: 17 grams
  • Carbohydrate Content: 39 grams
  • Protein Content: 3 grams