Chocolate Mint Brownie Squares

Name: Chocolate Mint Brownie Squares
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 16 squares
Ingredients: 1 cup unsalted butter, melted; 2 cups granulated sugar; 4 large eggs; 1 tsp vanilla extract; 1 cup all-purpose flour; 1 cup unsweetened cocoa powder; 1/2 tsp salt; 1/2 tsp baking powder; 1/2 cup unsalted butter, softened; 2 cups powdered sugar; 2 tbsp milk; 1 tsp peppermint extract; Green food coloring (optional)

Highlighted under: Modern Kitchen

When I first created these Chocolate Mint Brownie Squares, I was on a mission to find the perfect blend of rich chocolate and refreshing mint in a handheld form. The intensity of the cocoa perfectly complements the coolness of mint, making each bite a delightful experience. I love serving these at gatherings, as they never fail to impress friends and family with their beautiful layers and unique flavor. Plus, they're surprisingly simple to make, which means I can whip them up on a whim for any occasion!

Created by

Rhiannon Sutherland

Last updated on 2026-01-13T06:51:36.588Z

My journey with these Chocolate Mint Brownie Squares started during a cozy winter evening. I wanted to create something that evoked the warmth of chocolate while embracing the freshness of mint. After several tests, I discovered that adding a hint of peppermint extract to the frosting achieved the perfect balance, making the squares even more delightful.

I also learned that the key to achieving a fudgy brownie texture lies in slightly underbaking them. This keeps them moist and chewy while allowing the flavors to meld beautifully. It’s a technique I'll definitely continue to use in my other brownie recipes!

        Why You'll Love These Brownies
        Intense chocolate flavor with a refreshing mint twist
Decadent texture that satisfies chocolate cravings
Ideal for any gathering or as a special treat

      

Balancing Chocolate and Mint

Achieving the right balance of chocolate and mint is crucial for these brownie squares. The deep, rich flavor of cocoa used in the brownie base should be complemented by the fresh, vibrant taste of the mint frosting. When choosing cocoa powder, opt for a high-quality unsweetened variety; this will enhance the overall chocolate intensity without adding unwanted sweetness. If you're feeling adventurous, consider using dark chocolate cocoa powder for an even richer flavor.

The peppermint extract in the frosting is what gives these brownies their signature mintiness. However, be cautious with the amount you use. Peppermint can easily overpower other flavors if added in excess. I recommend starting with one teaspoon; if you prefer a stronger mint flavor, add it incrementally. Some may find it helpful to taste-test the frosting before spreading it on the brownies.

Perfecting the Brownie Texture

For the ultimate fudgy texture, it’s essential to avoid overmixing the brownie batter. Once you add the dry ingredients, mix just until incorporated. This prevents gluten from developing, which could lead to a denser, cake-like brownie instead of the desired fudgy result. Baking at the correct temperature also matters; using an oven thermometer can help ensure accuracy. If your oven tends to run hot, keep an eye on your brownies and check for doneness around the 20-minute mark.

After baking, let the brownies cool completely in the pan before frosting. This will prevent the frosting from melting and blending into the brownies, preserving the beautiful layers. A cooling rack helps here but be careful when transferring; you can simply leave them in the pan. If you’re short on time, pop them in the refrigerator for a quick chill before frosting.

Ingredients

Gather the following ingredients to get started:

For the Brownies

1 cup unsalted butter, melted
2 cups granulated sugar
4 large eggs
1 tsp vanilla extract
1 cup all-purpose flour
1 cup unsweetened cocoa powder
1/2 tsp salt
1/2 tsp baking powder

For the Mint Frosting

1/2 cup unsalted butter, softened
2 cups powdered sugar
2 tbsp milk
1 tsp peppermint extract
Green food coloring (optional)

Once you have your ingredients ready, it's time to start baking!

Instructions

Follow these steps for perfect brownies:

Make the Brownie Base

Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan. In a large bowl, mix melted butter and sugar until smooth. Add eggs and vanilla, then stir in flour, cocoa powder, salt, and baking powder until well combined. Pour the batter into the prepared pan.

Bake the Brownies

Bake in the preheated oven for 20-25 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. Avoid overbaking for that fudgy texture!

Prepare the Mint Frosting

While the brownies cool, whip together softened butter, powdered sugar, milk, peppermint extract, and a few drops of food coloring until fluffy and well combined.

Frost and Slice

Spread the mint frosting over the cooled brownies. Allow the frosting to set for a few minutes before slicing into squares. Enjoy these delightful treats!

Enjoy your delicious Chocolate Mint Brownie Squares!

Pro Tips

For an extra flavor boost, consider adding crushed peppermint candies on top of the frosting before it sets.

Storing and Serving

These Chocolate Mint Brownie Squares can be stored in an airtight container at room temperature for up to three days. For longer storage, refrigerate them, where they’ll keep for about a week. You can also freeze the uncut brownies wrapped tightly in plastic wrap and aluminum foil for up to three months. When ready to enjoy, allow them to thaw in the refrigerator overnight and frost just before serving for the best flavor and texture.

For a classy presentation, consider garnishing the frosted brownies with dark chocolate shavings or a light dusting of cocoa powder. You can also enhance the mint experience by adding crushed mint candies on top of the frosting. These brownies are perfect for festive occasions or just a cozy movie night.

Making It Your Own

Feel free to customize these brownie squares to match your taste preferences. Try adding 1/2 cup of chopped nuts, like walnuts or pecans, to the brownie batter for added texture and flavor. Alternatively, for a richer experience, incorporate a layer of chocolate ganache on top of the mint frosting - simply melt chocolate with a little cream for a glossy finish.

If you want to switch things up, use different flavors of extract for the frosting, such as vanilla or almond, and adjust the food coloring accordingly. The base of rich chocolate brownies remains a delightful canvas for various twists and creative takes, allowing you to impress your guests with unique variations.

Questions About Recipes

→ Can I use dark chocolate instead of cocoa powder?

Yes, you can substitute dark chocolate. Just melt it and adjust the quantity to maintain the same chocolate flavor.

→ How can I make these brownies gluten-free?

You can use a 1:1 gluten-free flour blend in place of all-purpose flour to make these brownies gluten-free.

→ How long will these brownies last?

They can be stored in an airtight container at room temperature for up to a week, or refrigerated for longer freshness.

→ Can I freeze the brownies?

Absolutely! Wrap them tightly and freeze for up to 3 months. Thaw before serving.