01 -
Preheat your oven to 350°F (175°C) and grease or line a 9×13 inch baking pan.
02 -
In a bowl, mix melted butter and sugar until well combined. Add eggs one at a time, stirring until smooth.
03 -
Sift together cocoa powder, flour, and espresso powder into the wet mixture. Fold gently until combined.
04 -
Pour brownie batter into the prepared pan and bake for 25-30 minutes or until a toothpick comes out with moist crumbs.
05 -
While cooling, combine mascarpone cheese with powdered sugar and milk until creamy. Spread over cooled brownies.
06 -
Dust the top with cocoa powder and refrigerate for at least an hour before slicing.