01 - 
                Butter an 8x4 inch metal loaf pan and line with parchment paper to ensure easy removal.
              
              
              
                02 - 
                Microwave chocolate chips and butter in 30-second intervals, stirring between bursts, until smooth and glossy.
              
              
              
                03 - 
                Stir in granulated sugar and instant espresso powder into the melted chocolate until the sugar begins dissolving.
              
              
              
                04 - 
                Incorporate one whole egg and one yolk, whisking vigorously for one to two minutes until the batter is smooth and fudgy.
              
              
              
                05 - 
                Gently fold in all-purpose flour and salt just until no dry streaks remain; do not overmix to preserve fudginess.
              
              
              
                06 - 
                Pour batter into prepared pan, smooth the top, and bake at 350°F (177°C) for 25 to 30 minutes, until edges pull away and center jiggles slightly. Internal temperature should read at least 180°F (82°C). Allow to cool completely.
              
              
              
                07 - 
                Prepare a strong shot of espresso and let it cool fully to avoid melting the topping. Optionally add coffee liqueur.
              
              
              
                08 - 
                Quickly dip each ladyfinger in the cooled espresso mixture to avoid sogginess and layer evenly over the cooled brownies.
              
              
              
                09 - 
                Whip mascarpone, vanilla bean paste, and granulated sugar gently until combined. Slowly add cold heavy cream and whip on medium speed until soft peaks form. Chill until ready to assemble.
              
              
              
                10 - 
                Pipe or spread the mascarpone cream evenly over the ladyfinger layer to create a fluffy, creamy topping.
              
              
              
                11 - 
                Refrigerate assembled creation for at least one hour to set layers firmly. Before serving, dust the surface generously with Dutch cocoa powder and slice with a sharp knife.