Ingredients:
- 1 cup (225g) unsalted butter, cut into cubes
- 1 cup (200g) granulated sugar
- 1 cup (220g) packed light brown sugar
- 3 large eggs
- 1 teaspoon (5ml) vanilla extract
- 1 cup (120g) all-purpose flour
- ¾ cup (75g) unsweetened cocoa powder
- ½ teaspoon (3g) baking powder
- ¼ teaspoon (1.5g) salt
- 6 ounces (170g) semi-sweet chocolate chips
- 4 tablespoons (57g) unsalted butter, softened
- 2 cups (240g) powdered sugar
- 2 tablespoons (30ml) milk
- ½ teaspoon (2.5ml) peppermint extract
- Green food coloring (optional, a few drops)
- 4 ounces (113g) semi-sweet chocolate, chopped
- ¼ cup (60ml) heavy cream
Instructions:
- Preheat oven to 350°F (175°C). Line a 9x13 inch baking pan with parchment paper, leaving an overhang for easy removal.
- In a large bowl, melt the butter with both sugars in microwave until completely smooth or in the oven until a spoon runs through it and smooth. Stir or whisk until combined, smooth and no lumps of sugar are visible.
- Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
- In a separate bowl, whisk together the flour, cocoa powder, baking powder, and salt.
- Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.
- Fold in the chocolate chips.
- Pour the brownie batter into the prepared pan and spread evenly. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs attached.
- While the brownies are baking, make the mint layer. In a medium bowl, beat the softened butter with an electric mixer until smooth. Gradually add the powdered sugar, alternating with the milk, until a smooth and creamy frosting forms. Stir in the peppermint extract and green food coloring (if using).
- Let the brownies cool completely in the pan before frosting.
- Once the brownies are cooled, spread the mint frosting evenly over the top.
- Heat the heavy cream in a small saucepan until just simmering. Pour over the chopped chocolate and let it sit for a minute. Whisk until smooth and glossy.
- Drizzle or spread the chocolate ganache over the mint layer.
- Chill the brownies for at least 30 minutes before cutting into squares. This will help the frosting set and make them easier to cut.