I have fond memories of awesome mint brownie made by my housemate Kim during university days which i can’t help having pieces and pieces of. And finally now i tried making it.
Ingredients: Recipe from Serious Eats’ Alpine Mint Brownie
For The Brownies
90g cups all purpose flour
1/2 teaspoon salt
1 tablespoons dark unsweetened cocoa powder
156g dark chocolate
coarsely chopped 115g unsalted butter, cut into 1-inch pieces
100g granulated sugar
30g firmly packed light brown sugar
2.5 large eggs, at room temperature
1 teaspoons pure vanilla extract
For The Mint Filling
100g confectioner’s sugar
40g unsalted butter
1 tablespoons milk
1/2 teaspoons mint extract
For The Ganache Glaze
85g ounces chocolate chips or chopped chocolate
40g ounces butter change from heavy cream to milk
some recipe say 1/2 teaspoon mint
Made one third of the original mint filling Decreased the sugar from 150g caster + 50g brown to 100g caster and 30 brown
Recipe i used
Ingredients
Melt butter and chocolate over boiling butter
Smooth chocolate, then add sugar, egg, vanilla, flour to make the brownie batter
brownie batter
done
to make the frosting, i used Fox’s mint sweet as the mint flavoring is kinda expensive and not going to use it often. Icing sugar, unsalted butter, a few Fox mint melted in microwave with some water The mint frosting turn out barely minty 
beat all together
spread the mint filling all over
chocolate ganache recipe
double boil melting
pour chocolate ganache over the mint brownie Barely memorable, perhaps a strong mint flavoring will bring out this dessert more
