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Mint Chocolate Brownies Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 55 reviews
  • Author: Caroline
  • Prep Time: 1 hour
  • Cook Time: 35 minutes
  • Total Time: 6 hours
  • Yield: 30 brownies
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Description

Classic Mint Chocolate Brownies featuring a rich chocolate base layered with creamy mint frosting and a smooth chocolate topping. Perfectly fudgy and bursting with mint flavor, these brownies are a delightful treat for mint and chocolate lovers.


Ingredients

Units Scale

Brownies

  • 1 cup (16 Tbsp; 226g) unsalted butter
  • 8 ounces semi-sweet chocolate, coarsely chopped
  • 1 and 1/2 cups (300g) granulated sugar
  • 1/2 cup (100g) packed light brown sugar
  • 4 large eggs, at room temperature
  • 2 teaspoons pure vanilla extract
  • 1/2 teaspoon salt
  • 1/2 cup + 3 tablespoons (86g) all-purpose flour (spooned & leveled)
  • 1/4 cup (21g) natural unsweetened cocoa powder

Mint Frosting Layer

  • 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
  • 2 cups (240g) confectioners’ sugar
  • 2 Tablespoons (30ml) milk
  • 1 and 1/4 teaspoons peppermint extract
  • 1 drop liquid or gel green food coloring (optional)

Chocolate Layer

  • 1/2 cup (8 Tbsp; 113g) unsalted butter
  • 1 heaping cup (around 200g) semi-sweet chocolate chips

Instructions

  1. Melt Butter and Chocolate: In a medium saucepan over medium heat, melt the butter and coarsely chopped semi-sweet chocolate, stirring constantly for about 5 minutes until smooth. Alternatively, melt in 20-second increments in the microwave, stirring after each, until fully melted. Remove from heat and pour into a large mixing bowl. Let cool for 10 minutes.
  2. Prepare Oven and Pan: Adjust the oven rack to the lower third position and preheat oven to 350°F (177°C). Line a 9×13-inch baking pan with parchment paper on the bottom and sides, leaving an overhang for easy lifting. Set aside.
  3. Make Brownie Batter: Whisk granulated sugar and brown sugar into the cooled chocolate mixture. Add eggs one at a time, whisking thoroughly after each addition. Stir in vanilla extract. Gently fold in salt, all-purpose flour, and cocoa powder until just combined.
  4. Bake Brownies: Pour batter into the prepared pan and bake for 36 minutes or until brownies start to pull away from the edges and a toothpick inserted in the center comes out with a few moist crumbs. Remove from oven and cool completely on a wire rack. Once cooled, lift brownies out using parchment overhang and place on a baking sheet.
  5. Prepare Mint Frosting: In a medium bowl, beat softened butter on medium speed with a handheld or stand mixer fitted with a paddle attachment until creamy, about 2 minutes. Add confectioners’ sugar and milk. Beat for 2 minutes on low speed, then increase to high speed and beat for 1 more minute. Add peppermint extract and optional green food coloring, then beat on high for 1 full minute. Taste and adjust peppermint extract if desired.
  6. Frost Brownies: Spread the mint frosting evenly over the cooled brownies on the baking sheet. Refrigerate for at least 1 hour and up to 4 hours to set the frosting before adding the chocolate layer.
  7. Melt Chocolate Layer: In a medium saucepan over medium heat, melt butter and semi-sweet chocolate chips together, stirring constantly for about 5 minutes until smooth. Alternatively, melt in the microwave in 20-second increments, stirring until smooth.
  8. Top Brownies: Pour melted chocolate evenly over the set mint layer. Spread gently with a knife or offset spatula. Refrigerate brownies on the baking sheet for 1 hour to allow the chocolate topping to set, or up to overnight.
  9. Cut and Serve: Remove brownies from refrigerator and cut into 24-30 squares using a very sharp large knife. Make quick cuts and wipe knife clean with a paper towel between each cut for neat edges. Serve at room temperature or chilled. Store leftovers covered tightly in refrigerator for up to 5 days.

Notes

  • Make ahead by baking and freezing brownies before frosting, then thaw overnight in refrigerator and frost with mint and chocolate layers for freshest topping.
  • Alternatively, freeze fully finished brownies, thaw overnight in refrigerator before cutting.
  • Use peppermint extract for authentic mint flavor rather than mint extract, which can taste like spearmint toothpaste.
  • Smaller pan option: For a 9-inch square pan, halve frosting and chocolate topping amounts and bake accordingly.
  • For neat cuts, use a large sharp knife and wipe between cuts to prevent smearing.

Nutrition

  • Serving Size: 1 brownie
  • Calories: 320 kcal
  • Sugar: 30 g
  • Sodium: 150 mg
  • Fat: 20 g
  • Saturated Fat: 12 g
  • Unsaturated Fat: 7 g
  • Trans Fat: 0 g
  • Carbohydrates: 38 g
  • Fiber: 3 g
  • Protein: 4 g
  • Cholesterol: 70 mg