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Easy Homemade Mint Brownies with Creamy Frosting: Bakery-Quality Chocolate Dessert

Fudgy chocolate brownies layered with cool mint frosting and finished with a glossy chocolate ganache—an elevated, bakery-style treat that balances rich chocolate with refreshing mint.
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Servings: 16 brownies
Course: Dessert
Cuisine: American
Calories: 305
Ingredients Method Notes

Ingredients
  

  • 1 cup unsalted butter
  • 1 cup unsweetened cocoa powder
  • 2¼ cups granulated sugar
  • ¾ teaspoon salt
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 1¼ cups all-purpose flour
  • 6 tablespoons softened butter for mint frosting
  • 3 cups powdered sugar for frosting
  • 1 teaspoon mint or peppermint extract
  • 2 –3 tablespoons heavy cream for frosting
  • Green food coloring optional
  • 1½ cups semi-sweet chocolate chips for ganache
  • 2 tablespoons softened butter or canola oil for ganache
  • ½ teaspoon mint extract optional for ganache

Method
 

  1. Preheat oven to 350°F. Grease a 9×13-inch pan and dust with cocoa powder or line with parchment.
  2. In a microwave-safe bowl, combine 1 cup butter, 1 cup cocoa powder, and 2¼ cups sugar; microwave in 1-minute increments, stirring until glossy and combined.
  3. Stir in ¾ tsp salt and 1 tsp vanilla. Add eggs one at a time, mixing after each addition.
  4. Fold in 1¼ cups flour until just combined; avoid overmixing. Spread batter evenly in prepared pan.
  5. Bake 30–35 minutes until a toothpick shows moist crumbs. Cool completely before frosting.
  6. For mint frosting: beat 6 tbsp softened butter with 3 cups powdered sugar, 1 tsp mint extract, and 2–3 tbsp cream until smooth and fluffy; tint green if desired.
  7. Spread a ¼-inch layer of mint frosting evenly over cooled brownies.
  8. For ganache: melt 1½ cups semi-sweet chips with 2 tbsp butter in 30-second microwave bursts, stirring until smooth; stir in ½ tsp mint extract if using.
  9. Pour ganache over frosting and smooth. Let set at room temperature or refrigerate briefly to firm.
  10. Use a hot, wiped knife to slice into 16 squares. Serve at room temperature or slightly chilled.

Notes

Cool brownies completely before frosting to prevent melting. Use gentle microwave bursts for chocolate to avoid seizing. For the cleanest slices, dip the knife in hot water and wipe between cuts.