Mint Brownies are decadent layered treats featuring a fudgy brownie base, creamy mint frosting, and a rich chocolate topping. Perfect for special occasions or whenever you crave a sweet, refreshing dessert.
1/2 cup (8 Tbsp; 113g) unsalted butter, softened (for frosting)
2 cups (240g) confectioners’ sugar
2 Tbsp (30ml) milk
1 1/4 teaspoons peppermint extract
Optional: 1 drop liquid or gel green food coloring
1/2 cup (8 Tbsp; 113g) unsalted butter (for chocolate layer)
1 heaping cup (about 200g) semi-sweet chocolate chips
Instructions
Melt the butter and chopped chocolate in a medium saucepan over medium heat, stirring constantly, or microwave in 20-second increments, stirring each time. Remove from heat and let cool for 10 minutes.
Preheat oven to 350°F (177°C). Line a 9×13-inch baking pan with parchment paper, leaving an overhang. Set aside.
Whisk the granulated and brown sugars into the cooled chocolate mixture. Add eggs, one at a time, whisking until smooth after each. Whisk in vanilla.
Gently fold in salt, flour, and cocoa powder. Pour batter into prepared pan and bake for 35-36 minutes, until edges pull away from the pan and a toothpick inserted comes out with a few moist crumbs. Cool completely in pan on a wire rack.
Once cooled, lift brownies out using the parchment overhang and place on a baking sheet.
For the mint frosting: In a medium bowl, beat butter until creamy, about 2 minutes. Add confectioners’ sugar and milk, beating 2 minutes on low, then 1 minute on high. Add peppermint extract and food coloring (if using); beat on high 1 more minute. Spread over cooled brownies. Chill for at least 1 hour (up to 4 hours).
For the chocolate layer: Melt butter and chocolate chips in a saucepan over medium heat or in the microwave as above. Pour over mint layer and spread gently. Chill brownies for 1 hour (or up to overnight) to set the chocolate.
Once chilled, remove from refrigerator and cut into squares with a sharp knife, wiping the blade between cuts. Store leftovers covered in the fridge for up to 5 days.
Notes
Let brownies cool fully before frosting for best layers.
Chill each layer for clean slicing and set layers.
Add more peppermint extract for a bolder mint flavor if desired.
For neat cuts, use a sharp knife and wipe between each slice.
Brownies are best kept refrigerated but are okay at room temperature for several hours.