01 -
Preheat oven to 350°F (177°C) and line and grease a 9×13-inch pan.
02 -
Melt the butter, sugar, cocoa, and salt in a saucepan over low heat, stirring until smooth. Let cool slightly, then mix in vanilla and mint extracts.
03 -
Beat in the eggs one at a time, fully incorporating each before adding the next. Fold in the flour until just combined.
04 -
Pour the brownie batter into the prepared pan and bake for 25-28 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Cool completely.
05 -
For the mousse, melt white chocolate with 3/4 cup heavy cream over low heat, stirring until smooth. Let cool.
06 -
Whip the remaining heavy cream to soft peaks, then stir in a pinch of salt, peppermint extract to taste, and a few drops of green and yellow food coloring into the cooled white chocolate mixture.
07 -
Gently fold the whipped cream and finely chopped chocolate into the white chocolate mixture. Spread the mousse evenly over the cooled brownie base.
08 -
For the glaze, heat heavy cream until just simmering, then pour it over the chopped semi-sweet chocolate. Let sit for a minute, then stir until smooth and glossy. Pour over the mousse layer, spreading evenly.
09 -
Refrigerate the brownies for at least 3 hours or until the mousse is set. Cut into squares and garnish with green candies if desired.